Heap, George, joint-author.
*Map 98.4.P4.1750 Scull, Nicholas, and George Heap.
A map of Philadelphia and parts adjacent, with a perspective view of the State-house. 1750. Philadelphia. Boggs. 1893. Size, 19 1/2 x ll 11/16 inches. Scale (computed), 1 mile to 1 inch.