A photograph print showing Colorado & Southern (C&S) 60, 2-8-0, 3' gauge, with snow plow on front, with passenger train, Idaho Springs, CO..

A photograph print showing Colorado & Southern (C&S) 70, 2-8-0, narrow gauge, Idaho Springs, CO. (Note: switchman moving switch points)

A photograph print showing the Colorado & Southern (C&S) abandoned Georgetown Loop of the former Clear Creek branch between Georgetown and Silver Plume, CO, looking from the high fill. [five views]

A photograph print showing the Colorado & Southern (C&S) abandoned Georgetown Loop of the former Clear Creek branch between Georgetown and Silver Plume, CO, looking from the high fill.

A photograph print showing the Colorado & Southern (C&S) abandoned Georgetown Loop of the former Clear Creek branch, middle of three bridges still in place, between Georgetown and Silver Plume, CO.

A photograph print showing the Colorado & Southern (C&S) abandoned Georgetown Loop of the former Clear Creek branch, upper of three bridges still in place, between Georgetown and Silver Plume, CO.

A photograph print showing the Colorado & Southern (C&S) abandoned Georgetown Loop of the former Clear Creek branch, lower of three bridges still in place, between Georgetown and Silver Plume, CO.

A photograph print of Colorado & Southern (C&S) narrow gauge short caboose 1006, 4-wheel, wood-sided, off-set cupola, on display at the old Silver Plume, CO, depot located at the end of the Clear Creek Branch before it was abandoned several years ago, June 7, 1942.

A photograph print of Colorado & Southern (C&S) narrow gauge short caboose 1006, 4-wheel, wood-sided, off-set cupola, on display at the old Silver Plume, CO, depot located at the end of the Clear Creek Branch before it was abandoned several years ago, June 7, 1942. "Jack Thode in cupola"

A photograph print showing Colorado & Southern (C&S) passenger & freight depot, Idaho Springs, CO.

A photograph print showing the Colorado & Southern (CS) 60, 2-8-0, with snow plow, on display at Idaho Springs, CO. [see also 2008.008.7060 & 7061, taken at the same time]

A photograph negative showing the Colorado & Southern (CS) 60, 2-8-0, with snow plow, on display at Idaho Springs, CO. [note: bear trap spark arrestor] [see also 2008.008.6167 & 7061, taken at the same time]

A photograph negative showing the Colorado & Southern (CS) 60, 2-8-0, with snow plow, on display at Idaho Springs, CO. [see also 2008.008.6167 & 7060, taken at the same time]

Interview with Harold L. Trammell, a member of the Civilian Conservation Corps from Mason, Oklahoma. Trammell discusses his early life, train hopping to Utah and back, enrollment in the CCC at Fort Sill, his assignment to Cache, Oklahoma, building trails in the Wichita Mountains Wildlife Refuge, work at Arapaho National Forest in Colorado, pranks in camp, daily routine, entertainment and recreation, drinking, discipline, and life after the CCC. In appendix is a copy of Trammell's account of his time in the CCC, and the May 30th, 1935 edition of the CCC magazine "Panther Tracks."

Report discussing the geology and numerous ore deposits of the Chicago Creek area in Clear Creek County, Colorado. Prior to this report, gold, silver, copper, lead, zinc, and uranium were produced from this area.

Report discussing the results of a geological study of the Idaho Springs-Central City area of the Front Range mineral belt. The study was still in progress at the time of publication.

From introduction: The Martha E prospect, in Spring Gulch about three and one-half miles southwest of Idaho Springs, Colo. (fig. 1), is on a claim, originally called the Daisy Freese, which was first prospected by the Stanley Mines. The occurrence of radioactive minerals in the adit was called to the attention of the U. S. Geological Survey in 1950 by the owners of the claim. The Survey's Trace Elements Section Washington Laboratory identified metatorbernite, autunite, and sooty pitchblende.

From abstract: Pitchblende is known to occur in the Jo Reynolds deposit, which was primarily a lead-zinc-silver ore body. The reported production in 1919 of 8 tons of high-grade uranium ore, presumably from the lowest workings of the mine, is still unconfirmed but has a fair degree of credibility.

A report regarding a geological survey of the geology and ore deposits of the Freeland-Lamartine District, Clear Creek County, Colorado. Concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.

A photograph print showing Colorado & Southern (C&S) 70, 2-8-0, narrow gauge, double-heading a freight extra (Note: brakemen on boxcar), Idaho Springs, CO.

A photograph postcard showing Colorado & Southern (C&S) 70, 2-8-0, and 73, 2-8-0, narrow gauge, double-heading a mixed freight extra, across the high bridge of the Georgetwon Loop, 3:56 pm, May 14, 1938.

A photograph postcard showing Colorado & Southern (C&S) 70, passenger car, wood-sided, on exhibition, Idaho Springs, CO.

From abstract: Eight tons of high grade pitchblende ore was sold from the Jo Reynolds mine near Lawson, Clear Creek County, Colo., in 1919. The pitchblende occurs with silver, lead, and zinc in carbonate-quartz veins cutting pre-Cambrian schist, granite gneiss, and granite.

A photograph postcard showing Argentine Central (AC) 1, 3-cylinder geared Shay, on passenger train, Silver Plume, CO.