My hidden agenda for this site is to encourage you to explore the whole field of fraktur studies. Accordingly, I provide my choice for the “top ten” books on the subject. Have a look!
To dive deeper, throw a descriptor or two into the search box of the Fraktur Bibliography page. The bibliography compilation began with the expectation of finding perhaps a couple hundred references. It now totals over 1,100.
The field is thought by most to be an obscure one and I recognize the difficulty obtaining much of this material. Every public library has an interlibrary loan service that is there to help you. In Related Resources, I link to my favorite source of used books but, of course, there are others. I would be happy to help.