Sources that have been edited, reprinted in facsimiles, or transferred to microfilm can be borrowed through E-ZBorrow or Interlibrary Loan if they are not in Tripod. Many of them will be listed in Tripod or WorldCat under subject terms and the word "sources." For example, the search inquisition sources produces books including:
Manuscripts and rare books about the Inquisition are available in Philadelphia-area libraries. See in particular the Henry Charles Lea collection in the Rare Book Room at the University of Pennsylvania. Lea did pioneering work on the history of the Inquisition. The finding aid for the Lea Research Collection indicates the range of manuscripts available both from Spain and Latin America.