Mast Books, East Village, Manhattan
Mast Books is a very cool and highly curated bookstore with a combination of new and used books. They are all in really nice condition and often with dust jacket and plastic cover. They have an interesting collection of books and the prices are fair as well! I was able to find a copy of Saul Leiter's Early Black And White even though it was already out of print and they charged the list price! You can find art, poetry, literature, architecture, photography books and more. Their website only problems address, telephone and hours.
Mast Books, 66 Avenue A.