Allegheny County Law Library (ACLL)

Banner Picture: Allegheny County Law Library Main Hall  

The Allegheny County Law Library (ACLL) is a free, public law library open to legal professionals and the general public; however, a membership card is required to borrow library materials and to access some databases and other services may require an additional fee.  


Library Information:

Membership | Staff directory | Rules of Conduct


Library News:

Facebook | Twitter | New Acquisitions List



Continuting Legal Education Classes | eReference | Document Delivery | More Services


Electronic Resources:

QuickSearch (library catalog) | All Electronic Databases | Fastcase (small firm members)


Starting Points for Research:

Legal Information and News | Government Information | Pro Bono Resources


Pennsylvania Law Guides:

Bibliography of Pennsylvania Law | Allegheny County Codes and Ordinances | Pennsylvania Constitution Guide


Subject Guides:

ADR | Animal Law | Criminal Law | More Guides


The Allegheny County Law Library is managed by the Duquesne University Center for Legal Information (Center) through a unique joint-library partnership. Based on an agreement between Duquesne University and Allegheny County, the two libraries offer legal research collections and services that meet the needs of the legal community as well as the public of Allegheny County and western Pennsylvania.

The Center for Legal Information (Center) is open to the public at large to conduct legal research; however, non-law students must sign-in upon entering the Center. Moreover, after regular business hours and during exam periods, access to the Center is restricted.


This library is a congressionally designated depository for United States Government documents. Public access to the government documents collection is guaranteed by public law (Title 44 United States Code). If you have questions concerning use of government documents, please ask a librarian or staff member.