Published lithograph, The Baxter Panoramic Business Directory, no. 18 (December 1879), Athenaeum of Philadelphia.
[More: add atlas footprints and earlier
panorama at this scale, approx 1.5 px=1 ft.]
[Closer, deeper: view diced panoramas and footprints at larger scale, approx. 3px=1 ft., aligned and linked to additional images and data on individual buildings]