Fuller, Randall (January–February 2011). ""Daybreak Gray and Dim"". The National Endowment for the Humanities. Archived from the original on August 20, 2021. Retrieved August 20, 2021.
Hindley, Meredith (November–December 2012). "When Bram Met Walt". The National Endowment for the Humanities. Archived from the original on August 27, 2021. Retrieved August 27, 2021.
Fuller, Randall (January–February 2011). ""Daybreak Gray and Dim"". The National Endowment for the Humanities. Archived from the original on August 20, 2021. Retrieved August 20, 2021.
Hindley, Meredith (November–December 2012). "When Bram Met Walt". The National Endowment for the Humanities. Archived from the original on August 27, 2021. Retrieved August 27, 2021.
"Abraham Lincoln". The White House. Archived from the original on July 19, 2021. Retrieved July 18, 2021.
whitmanarchive.org
Eiselein, Gregory (1998). LeMaster, J. R.; Kummings, Donald D. (eds.). 'Lincoln, Abraham (1809–1865)' (Criticism). New York City: Garland Publishing. Retrieved October 12, 2020 – via The Walt Whitman Archive.
Bellis 2019, p. 81. Bellis, Peter J. (2019). "Reconciliation as Sequel and Supplement". In Sten, Christopher; Hoffman, Tyler (eds.). "This Mighty Convulsion": Whitman and Melville Write the Civil War. Iowa City: University of Iowa Press. pp. 69–82. ISBN978-1-60938-664-1. OCLC1089839323.
Sten & Hoffman 2019, p. 27. Sten, Christopher; Hoffman, Tyler, eds. (2019). "This Mighty Convulsion": Whitman and Melville Write The Civil War. Iowa City, Iowa: University of Iowa Press. pp. 23–32. ISBN978-1-60938-664-1. OCLC1089839323.
Csicsila 2004, pp. 58–60, 63. Csicsila, Joseph (2004). "Nineteenth-Century Poetry: Whitman, Dickinson, Alice Cary, Phoebe Cary, Larcom, Thaxter, Lanier, Tabb". Canons by Consensus: Critical Trends and American Literature Anthologies. Tuscaloosa, Alabama: University of Alabama Press. pp. 55–85. ISBN978-0-8173-8178-3. OCLC320324064.
Bellis 2019, pp. 72–73. Bellis, Peter J. (2019). "Reconciliation as Sequel and Supplement". In Sten, Christopher; Hoffman, Tyler (eds.). "This Mighty Convulsion": Whitman and Melville Write the Civil War. Iowa City: University of Iowa Press. pp. 69–82. ISBN978-1-60938-664-1. OCLC1089839323.