Foster, Mary Salinda. “A Thought That Grew”, Typescript, 1940. SMHC Manuscript Collection 1304, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Foster, Mary Salinda. “A Thought That Grew”, Typescript, 1940. SMHC Manuscript Collection 1304, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/168 Accessed April 30, 2024.