Donald, David Herbert
Lincoln reconsidered
Vintage Books, 2001
 Buku Teks
Carnegie, Dale, 1888-1955
Lincoln: the unknown/Dale Carnegie
New York :Dake Carnegie & associates, Inc. ,1999,
 Buku Teks
Basler, Roy P., editor
Lincoln / Roy P. Basler
Evergreen Books Ltd, 1961
 Buku Teks
Herndon's life Lincoln : the history and personal recollections of Abraham Lincoln as originally written by William H. Herndonand and Jesse W. Weik. With a newly rev. introd. and by Paul M. Angle
Fawcett Publications, 1961
 Buku Teks
Sandburg, Carl
Abraham Lincoln : the war years
Harcourt Brace, 1939
 Buku Teks