1770. Le Rouge, Georges-Louis. Scale approximately 1:427,800.; 1 map: color; 61 x 120 cm Pennsylvania--Maps--Early works to 1800--Facsimiles.
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1770. Scale approximately 1:80,000; 1 map; 44 x 53 cm Pennsylvania--Maps--Early works to 1800.
1770. Scale not given; 1 map on 4 sheets: negative photocopy; 95 x 108 cm, on sheets 58 x 44 cm Pennsylvania--Maps--Early works to 1800.
1770. Scull, William, active 1765. Scale approximately 1:633,600; 1 map; 56 x 81 cm Administrative and political divisions--.