Item Description, Box Number, Folder Number, BetzDearborn, Incorporated Records, 1892-1997, Science History Institute Archives, Philadelphia, Pennsylvania.
Item Description, Box Number, Folder Number, BetzDearborn, Incorporated Records, 1892-1997, Science History Institute Archives, Philadelphia, Pennsylvania. https://sciencehistory.libraryhost.com/repositories/3/resources/62 Accessed October 16, 2024.