Logan Square: Logan Square. City plan and boulevard; properties and intersections of 20th Street, 19th Street, 18th Street, Vine Street, and Race Street. [ID: 12B-570; PWD ERV: 1075970; Drawing No.: 2506/1]. [1 sheet], 1892 January 9 - 1892 January 11, Drawer: F20, Folder: 2.1. Philadelphia Water Department 12B - Drawings Donation, FP.2019.002. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/4874 Accessed June 09, 2025.