Documents from the G. M. Colvocoresses mining collection. Description: Map of Rich Hill Placers; newspaper clippings; topographic map; assays; correspondence; report with assays by Kennard; report by Nicol; report by Colvocoresses; a compilation of reports by McNeer, Stines, Nico, Leland, Habecker, Stoneham, and de la Pole; stream flow records, water appropriations at or below the Box, notes by Colvocoresses. Property Name: Merrill, R. M., Rich Hill Plac. Property AKA: Arizona Gravel Property
