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Columbia's Ask A Librarian chat/text service is available for extended hours.
CLIO is the library catalog for the Columbia Library System (including Barnard Library, but excluding Teachers College and some information from the Law Library). In CLIO you can find books and media materials, search for different kinds of databases, and find articles within those databases as well.
This is the catalog of the Columbia Law Library - you can search here directly. You can find law library materials in CLIO, but you need to click on the link to Pegasus to see if the book is available for you to check out.
Teachers College Library has a fantastic collections of materials of education, available for BC/CU students. Search the Teachers College Library catalog, Educat. Teachers College materials are not shown in CLIO. Teachers College is on West 120th Street between Broadway and Amsterdam Avenue.
NYPL has over 300,000 e-books to borrow for free using their SimplyE App. Don't have a library card? That's OK. For this limited time, NYC residents (including students) can sign-up for a card in the app itself. There are all kinds of other digital resources in NYPL's collection, including archival material, image collections, language learning software, newspapers, magazines and more!
College students that attend New York State colleges but are studying remotely from home out of the state/country may still apply for NYPL cards!