المؤلفون: Park A, Buechner MM, Locke L, Walsh B, Adams K, Lemonick MD, Masters C, Gumbel P, Sayre C, Sharick C, Kher U, Smith A, Bjerklie D, Graff J, Kirchner S, Robinson S

المصدر: TIME Magazine; 4/9/2007, Vol. 169 Issue 15, p69-82, 11p

المؤلفون: SHARICK, C. W.

المصدر: Illinois State Democrat; 05/07/1852, p1-1, 1/9p