Printed Matter, Chelsea, Manhattan
Printed Matter in their own words is "the world’s leading non-profit organization dedicated to the dissemination and appreciation of artists' books." They've been in business since 1976 which is pretty incredible considering how difficult it is for independent bookstores to stay in business in New York City. They specialize in handmade books, zines, artists books and many books that you won't find in a typical bookstore. It is a fabulous find and definitely worth checking out especially if you happen to be in the neighborhood of the Chelsea galleries.
Printed Matter - 231 11th Avenue near 26th Street