Any large institution, like a university, is likely to maintain their archives and/or special collections to preserve institutional memory and to serve historians. Morehead State University does this with its library's special collections.
The library at MSU is actively digitizing much of the content of its special collections and making it available via:
The three great national institutions that preserve primary sources are of course:
Subject Coverage:
covers countless subjects
Dates of Coverage:
1000 C.E. to present
Update Frequency:
daily
Size:
more than 548 million item records
more than 3.3 billion holdings records
Note:
It includes manuscripts written as early as the 11th century as well as books cataloged yesterday. It would be a challenge to name a book that would not have a record in this database. Numerous journal articles are also available through WorldCat.