Markle, John W., “John W. Markle to his wife,” Digital Collections, accessed December 7, 2025, https://digitalcollections.library.gvsu.edu/document/9274.
Letter from John W. Markle written on Charles Magnus broadside ballad of "Nobody Hurt" (Old Abe) by John Ross Dix with images of Columbia holding a pen, the Constitution and a shield; the face of Abraham Lincoln framed by a star and array of U.S. flags; and the U.S. Capitol. Letter includes account of the Battle of Nashville.