"Generalized schematic of the hydrogeology of the study area. 1, unconfined conditions (Hawthorn Formation…
"Deformation of shale by porphyry, Burlington Railroad, east of Whitetail Gulch." -Walcott, 1901
"Diagram illustrating development of erosion profiles on laccolith domes." -Walcott, 1901
"Schematic of nitrogen cycling associated with litter disposal on broiler farms." -Hatzell, 1995