Geology, Vol. 1 [of 3]

by Thomas C. Chamberlin; Rollin D. Salisbury

Fig. 2. NEVADA.

PLATE IV.

U. S. Geol. Surv.

Scale, 1+ mile per inch.

Fig. 1. ILLINOIS.

U. S. Geol. Surv.

Scale, 2+ mile per inch.

Fig. 2. NORTH DAKOTA.