George Duggar maps, MSS-031, Case: 01; Case: 02; Case: 03. Southern Oregon University, Hannon Library.
George Duggar maps, MSS-031, Case: 01; Case: 02; Case: 03. Southern Oregon University, Hannon Library. https://sou.libraryhost.com/repositories/2/resources/33 Accessed May 03, 2024.
