Original Manuscripts
Official Documents
Reprinted in formal publications
Digitized
The WorldCat database has a material type of "Archival Material" that is often primary source material. Much of this material is only available in one library as an original document. Some has been digitized and made available online. Some may be requested via Interlibrary Loan.
Use the Find It! button and Interlibrary Loan to request books be sent to the University Library (usually available in 5-7 working days).