METRO and SHARES access continue to be temporarily suspended due to COVID-19 restrictions.
MarLI access is available to Columbia's Butler Library, but not to NYU Libraries at this time (December 2021).
The New York Public Library (NYPL Research Libraries) offers borrowing privileges, study rooms, and off-site access to e-resources.
MaRLI, the Manhattan Research Libraries Network, allows those approved by NYPL to visit and borrow from Columbia and NYU Libraries.
METRO referrals allow single-day, on-site access to NYC libraries, based on the need for an item that is otherwise unavailable.
SHARES extends university and museum library on-site access to visitors with a current GC photo ID.
GC Interlibrary Loan delivers most resources from other libraries to the GC for pickup.