Abraham Lincoln Association; edited by Roy P. Basler
Rutgers University Press, 1953
Buku Teks
Lawson, Henry, 1867-1922, author
Viking O`Neil, 1987
Buku Teks
Lawson, Henry, 1867-1922, author
Angus & Robertson, 1982
Buku Teks
Taylor, O.H., author
Harvard University Press, 1955
Buku Teks
Young, Brian
The Nuffield Foundation, 1967
Buku Teks