Letterpress copy book of letters from Graves to George R. Spinney and S.P. Dewey who were officers and stockholders in a mine which was not named. The collection contains material from October 16, 1866-June 16, 1867 created by R. N. Graves.

Agreement between the mine operators, Virginia City Miners' Union no. 46, and the Gold Hill Miners' Union no. 54 setting wages of miners at $5 per day during World War I (1918); and a letter from the mine operators to the unions rescinding the previous wage agreement, mentioning I. W. W. influence among agitators, and threatening to halt all mining if lower wages were not accepted (1919).

Notice to the presidents of the miners' unions signed by F. F. Osbiston, Aug. 29, summarizing an agreement between the Committee of Comstock Superintendents and Miners' Unions regarding unionizing of mine workers; and letter of Sept. 5, 1877 from the Miners' Unions stating that the Gold Hill, Silver City, and Virginia [City] Miners' Unions had ratified that agreement.