Pennsylvania Historical Maps and Atlases

The state of Pennsylvania collection contains 654 atlases spanning 326 years of growth and development (1681 through 2007). Within the atlases are 24,371 historical maps, illustrations, and histories many of which contain family names ideal for genealogical research. Others are rare antique maps, part of the collection by an exclusive arrangement with the Osher Map Library. The state of Pennsylvania has 38 of these antiquarian maps dating back as early as 1681.