Item Description, Box Number, Folder Number, Tiers-Frasch Collection, 1843-1919, Science History Institute Archives, Philadelphia, Pennsylvania.
Item Description, Box Number, Folder Number, Tiers-Frasch Collection, 1843-1919, Science History Institute Archives, Philadelphia, Pennsylvania. https://sciencehistory.libraryhost.com/repositories/3/resources/165 Accessed September 08, 2024.