Herndon, William H.
Live of Lincoln; The history and personal recalleetians of Abraham Lincoln as originally written / William H. Herdon, Jesse W. Weik
Fawcelt Pbul.Inc, , 1961
 Buku Teks
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
Randall, J.G.
Lincoln the President : springfield to gettysburg, vol. II
Dodd, Mead & Company, 1946
 Buku Teks