Yes, there can be as many as you want.
You can use the "Browse" button under "Manage Sources" to load another
master list. The easiest way to create a new list, is to create a copy of
the current list to another file and then remove its content through the
"Manage Sources" dialog.
Note that when Word starts, it normally always load the same master list
(%AppData%\Microsoft\Bibliography\sources.xml).
Yves
--
http://bibword.codeplex.com
Can there be more than one Master Source List? I don't particularly
need my History of Linguistics, Semitic Linguistics, and Writing
Systems bibliographies to all be mixed together and available at once,
and as I've been writing articles in the three areas, it's been
getting pretty big.