The Library has more than 100,000 volumes of fiction, non-fiction, trade, and technical-related research materials. The collection represents the importance placed on a broad education and illustrates urban work history. As the second-oldest continuously operating library in New York City, the wealth of older books makes the library an excellent research facility. Its archives date back to 1785.
Minutes, reports, correspondence, ledgers, leases, legal documents, architectural drawings, publications, scrapbooks, photographs, and other records of the General Society of Mechanics and Tradesmen of the City of New York, The Mechanics and Traders Exchange, and the New York Mechanic and Scientific Institution.