Between 1928 and 1929 Douglass worked for this company as a geologist. The correspondence with Homer D. Ford and other company officials is concerned with equipment, supplies, payments, employees, and lengthy reports on the company's mineral holdings and Douglass's progress.

Statements of expenses for needed equipment, vouchers and expense account statements for Douglass, and paid bills and receipts.

"Report on the Gilsonite Holdings of the Gilson Asphaltum Company in Utah and Colorado," is Douglass's 42-page report outlining the geological factors which create gilsonite veins and the incidence of these conditions in the Uinta Basin area. Both the preliminary and final reports are filed here. Also included are outlines for reports on the mineral gilsonite.

Tables of assessed valuation of ore tonnage available in each vein of the company's holdings for state tax purposes.

Estimates of gilsonite tonnage available in workable veins.

Data on individual veins including the discovery, location, and extent; workings and work progress; vein quality; and field notes on the work. Veins included are Baxter, Black Diamond, Black Dragon, Bonanza-Tabor System, Carbon, Chapita, Cowboy, Harrison, Independent, Little Emma, Nigger Baby, Pride of the West, Rainbow, South Harrison and West South Harrison, Wagonhound, and Uinta.

Original notes.

Notes from published sources.

Notes from published sources on lakes in Africa, Asia, Montana, Utah, and South America.