Author
Abraham Lincoln Association (Springfield, Ill.)
1
Browning, Orville Hickman, 1806-1881
1
Buehrer, Beverley Bare, 1947-
1
Guelzo, Allen C.
1
Illinois Division of Parks and Memorials
1
King, Willard L. 1893-1981
1
Lehrman, Lewis E.
1
Lincoln Park Zoo
1
Pease, Theodore Calvin, 1887-1948
1
Randall, J. G. 1881-1953
1
Riddle, Donald Wayne, 1894-
1
Stowell, Daniel W.
1