Check out Revolution and Romanticism (found at C18-L), which is also of interest for its use of Streetprint, a free open-source “software solution for showcasing, teaching, and archiving popular print and countless other kinds of collections and artifacts online”.
It’s quite an eclectic mixture, since it includes the sex manual Aristotle’s Masterpiece alongside street ballads like this one, accounts of executions, song collections and all sorts.
The same discussion at C18-L also produced something that may lead to some, er, interesting search terms in my logs: A treatise on the use of flogging in medicine and venery.