Report of the Committee on Plans and Improvements relating to Topliff Johnson property - with communication from J.W. Johnson relating thereto; and resolution of Commission authorizing the Committee on Plans to consider whether the proposal of Topliff Johnson's widow and heirs can be entertained, 1869 August 7, Drawer: 5-3. History Files, FP.2010.001.006. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/405692 Accessed April 21, 2025.