Philadelphia Area Consortium of Special Collections Libraries- This link opens in a new window
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The collections of the 36 PACSCL member libraries include a total of more than 4,000,000 rare books, 260,000 linear feet of manuscripts and archival materials, and 9,000,000 photographs, maps, architectural drawings, and works of art on paper. PACSCL member libraries hold rich collections of materials on national, regional, and local history; the natural and social sciences; world history, literature and religion; art and architecture; and business and industry.