MLA
Mead, Edwin D. (Edwin Doak), 1849-1937. Why Democrats Quote Lincoln, by Edwin D. Mead. between 1848 and 1910. William H. Scott Family Papers, 1848-1982. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0b2t-cor.
APA, 6th edition
Mead, Edwin D. (Edwin Doak), 1849-1937. (between 1848 and 1910)[Why Democrats Quote Lincoln, by Edwin D. Mead]. William H. Scott Family Papers, 1848-1982, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0b2t-cor.
Chicago
Mead, Edwin D. (Edwin Doak), 1849-1937, Why Democrats Quote Lincoln, by Edwin D. Mead, between 1848 and 1910, William H. Scott Family Papers, 1848-1982, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/221tdz0b2t-cor.