There are no central, required, or mandatory repositories, since Baptist congregations are autonomous bodies.
But there are depositories that exist...
1. Primitive Baptist Library, Elon College, NC (I do not have
their address and I do not believe that they are connected
to the internet.)
2. Primitive Baptist Library, Carthage, IL
http://www.carthage.lib.il.us/community/churches/primbap/pbl...3. For North Carolina in particular, go to this site, click
on "Baptist Archives and Museums" and choose "North
Carolina."
http://www.baptistheritage.com/directory/directory.htmPastor Tim.