Elsas, Oscar, 1871-1924. "Letter from Oscar Elsas to Thomas W. Hardwick, U.S. House of Representatives." Georgia Institute of Technology. Library. Archives, Records Management and Digital Curation Department . 1915-02-11, https://exhibit-archive.library.gatech.edu/fulton_bag/item67c0.html?collection=ms004&filename=ms004-099.xml.

Elsas, Oscar, 1871-1924 (1915-02-11). Letter from Oscar Elsas to Thomas W. Hardwick, U.S. House of Representatives. Retrieved from https://exhibit-archive.library.gatech.edu/fulton_bag/item67c0.html?collection=ms004&filename=ms004-099.xml

Elsas, Oscar, 1871-1924. "Letter from Oscar Elsas to Thomas W. Hardwick, U.S. House of Representatives." 1915-02-11. June 25, 2025. https://exhibit-archive.library.gatech.edu/fulton_bag/item67c0.html?collection=ms004&filename=ms004-099.xml.