The State Library of Pennsylvania is the official depository for all published documents produced by Pennsylvania state agencies.  The historical collection spans from the 1700s to the present.  It also includes some materials produced by legislative agencies.  Documents include annual reports, audits, maps, newsletters, reports, studies, plans, educational materials, and statistical compilations created for the research or informational use of the public.

State agencies have changed names, merged with other agencies, split into multiple agencies, or sent bureaus and offices to other agencies.  Information about these changes is included with each agency's collection.  Documents will be found under their originating agency name.

A portion of the State Library's state documents collection has been digitized by and is available at the Internet Archive.  The State Archives of Pennsylvania holds the records for each agency. Selected state documents available on the Internet Archive are noted in the agency findings aids.