Secret Libraries of New York City

http://www.atlasobscura.com/articles/secret-libraries-of-new-york-city
As the debate continues over the renovation of the main branch of the New York Public Library — a design by Norman Foster that would radically overhaul the stacks and other features of the historic Beaux-Arts building — we are looking at some of the city’s less visible libraries. The NYPL has an incredible branch system around the boroughs, but it’s only a part of New York City’s literary resources. From private clubs, to nonprofit societies, to pop up places right out in the streets, here are some of our favorite secret libraries of the city.