Correspondence relative to the money owed to Trumbauer, Zantzinger & Borie for services rendered in connection with the art museum which were terminated upon the death of Mr. Trumbauer, 1938 December - 1939 February, Drawer: 8.4. History Files, FP.2010.001.006. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/405900 Accessed April 20, 2025.