A photograph postcard showing Union Pacific (UP) 4929, 0-6-0, switch engine with slope-back tender, Portland, OR.

A photograph print showing Union Pacific (UP) 7861, 4-8-2, Portland, OR.

From Introduction: "The Riddle nickel deposit is on Nickel Mountain, also called Piney Mountain, about 5 miles northwest of Riddle, Douglas Country, Oreg. (fig. 20). The deposit is an unevenly distributed surficial blanket, containing the nickel silicate garnierite, which rests upon peridotitic rocks on the western, southern, and southeastern slopes of the mountain above an elevation of 2,000 feet. It is on the Southern Pacific Railroad, and it is about 230 miles by highway south of Portland. A poorly conditioned dirt road about 5 miles long connects the town with the nickel deposit."

A photograph print showing Union Pacific (UP) 1757, 4-8-0, at the Dalles, OR.

A photograph print showing Union Pacific (UP) 2161, 2-8-2, at the Dalles, OR.

A photograph print showing Union Pacific (UP) 2209, 2-8-2, at the Dalles, OR.

A photograph print showing Union Pacific (UP) 3221, 4-6-2, The Dalles, OR.

From Scope of Report: "During the summer of 1940, 34 days were spent in a preliminary study of the quicksilver deposits in the Steens and Pueblo Mountains. Nearly all of the quicksilver prospects were examined and mapped, and the general geology of the east flank of the mountains from north of Andrews to Denio was reconnoitered."

From Introduction: "The Opalite quicksilver district includes two deposits with a considerable past production, one deposit with a small production, and one unproved prospect. These deposits are located along the circumference of a semicircular area that extends from a short distance west of McDermitt, Nev., for about 20 miles along the Oregon-Nevada State boundary. (See fig. 34). The area thus includes parts of Humboldt County, Nev., and Malheur County, Oreg.; almost the entire production has been derived from the portion in Oregon."