diff --git a/ExcelMapper/ColumnInfo.cs b/ExcelMapper/ColumnInfo.cs
index bfb2cbe..0b79a26 100644
--- a/ExcelMapper/ColumnInfo.cs
+++ b/ExcelMapper/ColumnInfo.cs
@@ -280,7 +280,7 @@ public virtual object GetProperty(object o)
         }
 
         /// <summary>Specifies a method to use when setting the cell value from an object.</summary>
-        /// <param name="setCell">The method to use when setting the cell value from an object.</param>
+        /// <param name="setCell">The method to use when setting the cell value from an object. Action&lt;cell: ICell, property: object&gt;</param>
         /// <returns>The <see cref="ColumnInfo"/> object.</returns>
         public ColumnInfo SetCellUsing(Action<ICell, object> setCell)
         {
@@ -289,7 +289,7 @@ public ColumnInfo SetCellUsing(Action<ICell, object> setCell)
         }
 
         /// <summary>Specifies a method to use when setting the cell value from an object.</summary>
-        /// <param name="setCell">The method to use when setting the cell value from an object.</param>
+        /// <param name="setCell">The method to use when setting the cell value from an object. Action&lt;cell: ICell, property: T&gt;</param>
         /// <returns>The <see cref="ColumnInfo"/> object.</returns>
         public ColumnInfo SetCellUsing<T>(Action<ICell, T> setCell)
         {
@@ -298,7 +298,7 @@ public ColumnInfo SetCellUsing<T>(Action<ICell, T> setCell)
         }
 
         /// <summary>Specifies a method to use when setting the property value from the cell value.</summary>
-        /// <param name="setProp">The method to use when setting the property value from the cell value.</param>
+        /// <param name="setProp">The method to use when setting the property value from the cell value. Func&lt;cellValue: object, out property: object&gt;</param>
         /// <returns>The <see cref="ColumnInfo"/> object.</returns>
         public ColumnInfo SetPropertyUsing(Func<object, object> setProp)
         {
@@ -307,7 +307,7 @@ public ColumnInfo SetPropertyUsing(Func<object, object> setProp)
         }
 
         /// <summary>Specifies a method to use when setting the property value from the cell value.</summary>
-        /// <param name="setProp">The method to use when setting the property value from the cell value.</param>
+        /// <param name="setProp">The method to use when setting the property value from the cell value. Func&lt;cellValue: object, cell: ICell, out property: object&gt;</param>
         /// <returns>The <see cref="ColumnInfo"/> object.</returns>
         public ColumnInfo SetPropertyUsing(Func<object, ICell, object> setProp)
         {
diff --git a/ExcelMapper/ExcelMapper.cs b/ExcelMapper/ExcelMapper.cs
index be532fe..b2f45f4 100644
--- a/ExcelMapper/ExcelMapper.cs
+++ b/ExcelMapper/ExcelMapper.cs
@@ -148,7 +148,7 @@ public ExcelMapper(Stream stream)
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<T> Fetch<T>(string file, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -161,7 +161,7 @@ public IEnumerable<T> Fetch<T>(string file, string sheetName, Func<string, objec
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable Fetch(string file, Type type, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -174,7 +174,7 @@ public IEnumerable Fetch(string file, Type type, string sheetName, Func<string,
         /// </summary>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<dynamic> Fetch(string file, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -188,7 +188,7 @@ public IEnumerable<dynamic> Fetch(string file, string sheetName, Func<string, ob
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<T> Fetch<T>(string file, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -201,7 +201,7 @@ public IEnumerable<T> Fetch<T>(string file, int sheetIndex, Func<string, object,
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable Fetch(string file, Type type, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -214,7 +214,7 @@ public IEnumerable Fetch(string file, Type type, int sheetIndex, Func<string, ob
         /// </summary>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<dynamic> Fetch(string file, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -228,7 +228,7 @@ public IEnumerable<dynamic> Fetch(string file, int sheetIndex, Func<string, obje
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<T> Fetch<T>(Stream stream, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -241,7 +241,7 @@ public IEnumerable<T> Fetch<T>(Stream stream, string sheetName, Func<string, obj
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable Fetch(Stream stream, Type type, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -254,7 +254,7 @@ public IEnumerable Fetch(Stream stream, Type type, string sheetName, Func<string
         /// </summary>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<dynamic> Fetch(Stream stream, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -268,7 +268,7 @@ public IEnumerable<dynamic> Fetch(Stream stream, string sheetName, Func<string,
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<T> Fetch<T>(Stream stream, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -281,7 +281,7 @@ public IEnumerable<T> Fetch<T>(Stream stream, int sheetIndex, Func<string, objec
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable Fetch(Stream stream, Type type, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -294,7 +294,7 @@ public IEnumerable Fetch(Stream stream, Type type, int sheetIndex, Func<string,
         /// </summary>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<dynamic> Fetch(Stream stream, int sheetIndex, Func<string, object, object> valueParser = null)
         {
@@ -307,7 +307,7 @@ public IEnumerable<dynamic> Fetch(Stream stream, int sheetIndex, Func<string, ob
         /// </summary>
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         /// <exception cref="System.ArgumentOutOfRangeException">Thrown when a sheet is not found</exception>
         public IEnumerable<T> Fetch<T>(string sheetName, Func<string, object, object> valueParser = null)
@@ -320,7 +320,7 @@ public IEnumerable<T> Fetch<T>(string sheetName, Func<string, object, object> va
         /// </summary>
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         /// <exception cref="System.ArgumentOutOfRangeException">Thrown when a sheet is not found</exception>
         public IEnumerable Fetch(Type type, string sheetName, Func<string, object, object> valueParser = null)
@@ -339,7 +339,7 @@ public IEnumerable Fetch(Type type, string sheetName, Func<string, object, objec
         /// Fetches objects from the specified sheet name.
         /// </summary>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         /// <exception cref="System.ArgumentOutOfRangeException">Thrown when a sheet is not found</exception>
         public IEnumerable<dynamic> Fetch(string sheetName, Func<string, object, object> valueParser = null)
@@ -357,7 +357,7 @@ public IEnumerable<dynamic> Fetch(string sheetName, Func<string, object, object>
         /// </summary>
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<T> Fetch<T>(int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -370,7 +370,7 @@ public IEnumerable<T> Fetch<T>(int sheetIndex = 0, Func<string, object, object>
         /// </summary>
         /// <param name="type">The type of objects the Excel file is mapped to</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable Fetch(Type type, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -384,7 +384,7 @@ public IEnumerable Fetch(Type type, int sheetIndex = 0, Func<string, object, obj
         /// Fetches objects from the specified sheet index.
         /// </summary>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public IEnumerable<dynamic> Fetch(int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -573,7 +573,7 @@ private object MapCells(Type type, Func<string, object, object> valueParser, Typ
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<T>> FetchAsync<T>(string file, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -585,7 +585,7 @@ public async Task<IEnumerable<T>> FetchAsync<T>(string file, string sheetName, F
         /// </summary>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<dynamic>> FetchAsync(string file, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -599,7 +599,7 @@ public async Task<IEnumerable<dynamic>> FetchAsync(string file, string sheetName
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable> FetchAsync(string file, Type type, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -613,7 +613,7 @@ public async Task<IEnumerable> FetchAsync(string file, Type type, string sheetNa
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<T>> FetchAsync<T>(string file, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -626,7 +626,7 @@ public async Task<IEnumerable<T>> FetchAsync<T>(string file, int sheetIndex = 0,
         /// </summary>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<dynamic>> FetchAsync(string file, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -640,7 +640,7 @@ public async Task<IEnumerable<dynamic>> FetchAsync(string file, int sheetIndex =
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="file">The path to the Excel file.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable> FetchAsync(string file, Type type, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -654,7 +654,7 @@ public async Task<IEnumerable> FetchAsync(string file, Type type, int sheetIndex
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<T>> FetchAsync<T>(Stream stream, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -667,7 +667,7 @@ public async Task<IEnumerable<T>> FetchAsync<T>(Stream stream, string sheetName,
         /// </summary>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<dynamic>> FetchAsync(Stream stream, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -681,7 +681,7 @@ public async Task<IEnumerable<dynamic>> FetchAsync(Stream stream, string sheetNa
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetName">Name of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable> FetchAsync(Stream stream, Type type, string sheetName, Func<string, object, object> valueParser = null)
         {
@@ -695,7 +695,7 @@ public async Task<IEnumerable> FetchAsync(Stream stream, Type type, string sheet
         /// <typeparam name="T">The type of objects the Excel file is mapped to.</typeparam>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<T>> FetchAsync<T>(Stream stream, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -708,7 +708,7 @@ public async Task<IEnumerable<T>> FetchAsync<T>(Stream stream, int sheetIndex =
         /// </summary>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable<dynamic>> FetchAsync(Stream stream, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
@@ -722,7 +722,7 @@ public async Task<IEnumerable<dynamic>> FetchAsync(Stream stream, int sheetIndex
         /// <param name="type">The type of objects the Excel file is mapped to.</param>
         /// <param name="stream">The stream the Excel file is read from.</param>
         /// <param name="sheetIndex">Index of the sheet.</param>
-        /// <param name="valueParser">Allow value parsing</param>
+        /// <param name="valueParser">Allow value parsing. Func&lt;column(index/name): string, cellValue: object, out newCellValue: object&gt;</param>
         /// <returns>The objects read from the Excel file.</returns>
         public async Task<IEnumerable> FetchAsync(Stream stream, Type type, int sheetIndex = 0, Func<string, object, object> valueParser = null)
         {
diff --git a/README.md b/README.md
index e8cce2c..640c310 100644
--- a/README.md
+++ b/README.md
@@ -27,10 +27,12 @@ A library to map [POCO](https://en.wikipedia.org/wiki/Plain_Old_CLR_Object) obje
 ## Read objects from an Excel file
 
 ```C#
-var products = new ExcelMapper("products.xlsx").Fetch<Product>();
+var products = new ExcelMapper("products.xlsx").Fetch<Product>();   // Read from first worksheet
+var products = new ExcelMapper("products.xlsx").Fetch<Product>(2);  // Read from third worksheet
+var products = new ExcelMapper("products.xlsx").Fetch<Product>("Sheet Name"); // Read from specified worksheet name
 ```
 
-This expects the Excel file to contain a header row with the column names. Objects are read from the first worksheet. If the column names equal the property names (ignoring case) no other configuration is necessary. The format of the Excel file (xlsx or xls) is autodetected.
+This expects the Excel file to contain a header row with the column names. Objects are read from the worksheet specified by index or name. If the column names equal the property names (ignoring case) no other configuration is necessary. The format of the Excel file (xlsx or xls) is autodetected.
 
 ## Map to specific column names