Every depository library is required to have certain publications available for use.
From the en.wikipedia.org
The university's library became a Federal depository library in 1925, a status it has held since.
From the en.wikipedia.org
In 1916, the library received depository library status.
From the en.wikipedia.org
In 1947, it became a depository library for the United Nations Library network, holding documents for the state of Ohio.
From the en.wikipedia.org
It is a federal depository library.
From the en.wikipedia.org
Each member of Congress may delegate two qualified libraries if his or her district is not already being adequately served by a depository library.
From the en.wikipedia.org
The LSM also serves as a designated depository library for government publication regarding science, and owns a U.S. patent collection and patent search facility.
From the en.wikipedia.org
The library is an official depository for U.S. and Florida government publications.
From the jacksonville.com
The library is also one of 1250 federal depository libraries in the United States, and maintains an up to date archive of thousands of federal documents open to the public.