Listing of libraries with zine collections by state: http://zines.barnard.edu/zine-libraries
Examples of Zine collections:
"In many ways, online fandom fulfills the librarian's or teacher's deepest desire: It's an entire community of people who can't stop talking and thinking and sharing about books." Schaffner, B. (2009). In defense of fanfiction. Horn Book Magazine, 85(6), pg. 615.