15. Joseph H. Bonsall & Samuel L. Smedley A Complete Atlas of the City of Philadelphia 1860[Disk 5] Index plate [1 .tif image of Index Map showing the numbering and location of the sections in the atlas of Philadelpiha 1860 from Free Library of Philadelphia Map Collection], 2012 December 5, Drawer: 3-1, Box: 5, Disk: 15. Compact Disk Collection, FP.2016.005. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/1504 Accessed April 20, 2025.