Geologic map of the Genoa 7.5' Quadrangle, by Robert C. Pease, 1980.
Geologic map of the Genoa 7.5' Quadrangle showing geology and structure plus brief descriptions of 26 geologic units, and a correlation column.
Map 1Cg, 29x21", 1:24,000-scale full-color map, $7.00