Primary texts have been edited, reprinted in facsimiles, or transferred to microfilm can be borrowed through E Z Borrow or interlibrary loan if they are not in Tripod. Many of them will be listed in Tripod or WorldCat under subject terms and words like "reader*" "antholog*" "personal narrative*" or "sources." For example, the search erotic*[as subject] and( reader* OR source* OR antholog*) [as keywords] produces books including:
When Flesh Becomes Word: An Anthology of Early Eighteenth-Century Libertine Literature
Anthologie érotique: Le XVIIIe siècle
Major series of erotica
Eighteenth-Century British Erotica
Major series of early modern women's writings
Other Voice in Early Modern Europe - A series of print editions by or about women. Individual titles are listed in Tripod.
Books printed in the 17th or 18th century are kept in libraries' rare book collections. You can go to Haverford's Special collections, Bryn Mawr, the University of Pennsylvania, and other local libraries to see these books.