"Ingraham research, U.K. [United Kingdom]- G. Swinfield, London", 2009 - 2010

"Ingraham research, U.K. [United Kingdom]- G. Swinfield, London", 2009 - 2010, Box: 31, Folder: 25-26. Robinson-Clapp family archives, RH MS 578. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/581617 Accessed January 23, 2026.