Merge Excel Cells from C# and VB.NET applications
RangeStart-RangeEnd prefix - GemBox.Document - GemBox Support Forum
Merge PDF files from C# / VB.NET applications
4 Solutions to Merge Multiple Excel Worksheets into One - CodeProject
How to start exporting data to an excel file from a particular row of excel sheet? - Microsoft Q&A
Create address labels with Mail Merge
Export Customer File/Mail Merge function - Gemworld International
Mail Merge GemBox.Document
GemBox SpreadSheet and merged cells - Stack Overflow
Customize Mail Merge in Word Documents Using C# and VB.NET