Seward, Amos Dudley, 1815 - 1909. Letters, 1855 - 1879. SMHC Manuscript Collection 1220, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Seward, Amos Dudley, 1815 - 1909. Letters, 1855 - 1879. SMHC Manuscript Collection 1220, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/462 Accessed January 31, 2025.