Haengartner, Ursinus (d.1941), Ms. Coll. 275. E&R Library & Archives.
Haengartner, Ursinus (d.1941), Ms. Coll. 275. E&R Library & Archives. https://erhistoricalsociety.libraryhost.com/repositories/2/resources/3486 Accessed July 29, 2025.
