Morrow Plots Soil Sample | University of Illinois Archives
Soil samples being taken in the Morrow Plots at the University of Illinois. One of the men pictured is Mr. Pettit and the Observatory is visible in the background.
Found in RS: 39/2/20, Box AGR 6, Folder AGR 6-6 Morrow Plots, 1904-1910
Negative Number 4450, RS: 39/2/22