Owen, Robert L. (Robert Latham), 1856-1947. Sound Money League : A Non-Profit Non-Partisan Patriotic League Having for Its Objective, Box 1, Folder 6, Item 16,
Robert L. Owen Collection, 1913-1946.
Carl Albert Congressional Research and Studies Center.
https://fraser.stlouisfed.org/archival/5300/item/535475, accessed on January 15, 2026.