A family of Microsoft word processing software products for creating web, email, and print documents.
The Many to One facility on my MergeTools - 20140218.dotm Add-in can create the sort of documents that you require.
You can download it from the following page of my One Drive:
The file needs to be saved in the Word Startup folder. In Windows XP the default location for that folder is
C:\Documents and Settings[User Name]\Application Data\Microsoft\Word\STARTUP
In Windows Vista and Windows 7, 8 or 8.1 it is
C:\Users[User Name]\AppData\Roaming\Microsoft\Word\STARTUP
When that has been done and Word is started\re-started, the tab shown below will be added to the Ribbon:
One thing to note is that the field names in the data source must contain only alphanumeric characters (No @,#,$,%,&,(,), etc) and the field names must not start with a numeric character (0-9).
Also download the Using the Many to One Facility document that describes how to use that facility.