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Colorado Central (C&C) 60

A photograph postcard showing Colorado Central (C&C) 10, 2-6-0, narrow gauge, upside down in a creek above Boulder, CO, on the Boulder Canyon branch of the Union Pacific (laterDB&W), wreck caused when flange on tender broke as locomotive was backing down grade. (Car: UP 1322)
Date: 1881
Creator: Rogers, C. C.
Object Type: Postcard
System: The Gateway to Oklahoma History

Colorado Central (C&C) 154

A photograph postcard showing Colorado Central (C&C) 154, 2-6-0, narrow gauge on a 2-car mixed train on the Boulder Canyon branch of the Union Pacific (later DB&W). [Distant view of train]
Date: 1888~
Creator: Rogers, C. C.
Object Type: Postcard
System: The Gateway to Oklahoma History

Colorado Central (C&C) 155

A photograph postcard showing Colorado Central (C&C) 155, 2-6-0, narrow gauge on a 3-car mixed train at Gold Hill, CO (Later Salina). This line was the Boulder Canyon branch of the Union Pacific and later became the DB&W.
Date: 1888~
Creator: Rogers, C. C.
Object Type: Postcard
System: The Gateway to Oklahoma History

[Postcard of Colorado State Flower]

Postcard of a pair of flowers with five violet petals around five white petals. The letter begins with the date and place, "Boulder, Col. July 6 1906." It continues with, "Dear Mamie I guess you think I am dead for not writing but I was so busy the week before I left that I did not have time to write + we are so busy here going all the time that I don't think I will be able to write to you this summer. It is very cold here. We are going to climb the mountain this afternoon. You must write to me while I am here. Jassie Polk Address Chautauqua Grounds Boulder, Col." The postcard is addressed to "Miss Mamie McFaddin 1141 3rd Ave. Huntington, W. Va."
Date: July 8, 1906
Creator: unknown
Object Type: Postcard
System: The Portal to Texas History
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses (open access)

Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910: Part 1. -- Analyses

From Significance and value of Analyses of Coal: "The analyses published in this report cover samples of coal collected in many different parts of the country with unusual care by experiences men, in such manner as to make them representative of extensive beds of coal."
Date: 1913
Creator: Lord, N. W.
Object Type: Report
System: The UNT Digital Library
Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples (open access)

Analyses of Coals in the United States with Descriptions of Mine and Field Samples Collected between July 1, 1904 and June 30, 1910 Part 2. Descriptions of Samples

From Introduction: "This volume contains the descriptions of the samples whose analyses are published in the preceding volume, Part I of this bulletin. The descriptions have been compiled from the notebooks of the persons who collected the samples, have been condensed from accounts given in published reports of the United States Geological Survey, or have furnished by the collection themselves. Inasmuch as the descriptions represent the work of many persons during a period of six years, and inasmuch as they were recorded under widely differing conditions, they necessarily vary in fullness detail."
Date: 1913
Creator: Lord, N. W.
Object Type: Report
System: The UNT Digital Library
Treatment of the Tungsten Ores of Boulder County, Colo. (open access)

Treatment of the Tungsten Ores of Boulder County, Colo.

Report discussing the the development of milling practice in Boulder County, the ore-dressing methods in use, and the local manufacture of ferrotungsten and tungstic oxide. Figures giving the production of tungsten concentrates in the Boulder district, in the United States, and in the world; data on the buying of tungsten ores; costs of production; and the normal tungsten requirements in this country are presented.
Date: October 1921
Creator: Bonardi, J. P. & Williams, J. C.
Object Type: Report
System: The UNT Digital Library
Geophysical Prospecting: Some Electrical Methods (open access)

Geophysical Prospecting: Some Electrical Methods

Technical paper issued by the Bureau of Mines over experiments in electrical methods. The methods and equipment used are presented and described. This paper includes tables, illustrations, and photographs.
Date: 1928
Creator: Eve, A. S. & Keys, D. A.
Object Type: Report
System: The UNT Digital Library

Denver & Rio Grande Western (DRGW) 3405

A photograph print showing Denver & Rio Grande Western (DRGW) 3405, 2-8-8-2, on westbound freight extra at Crescent, CO, on the D&SL Ry.
Date: August 1935
Creator: Kindig, Richard H.
Object Type: Photograph
System: The Gateway to Oklahoma History

Chicago, Burlington & Quincy (CBQ) 5072

A photograph print showing Chicago, Burlington & Quincy (CBQ) 5072, 2-8-2, Longmont, CO.
Date: October 26, 1939
Creator: Krambeck, J. Wesley
Object Type: Photograph
System: The Gateway to Oklahoma History

Great Western (GWR) 101

A photograph print showing the Great Western (GWR) 101, 0-6-0, Longmont, CO.
Date: October 26, 1939
Creator: Krambeck, J. Wesley
Object Type: Photograph
System: The Gateway to Oklahoma History

Denver & Salt Lake (D&SL) 303

A photograph print showing Denver & Salt Lake (D&SL) 303, 4-6-0, on passenger train No. 2, eastbound, above Pinecliffe, CO, 2 cars.
Date: July 13, 1941
Creator: George, Preston
Object Type: Photograph
System: The Gateway to Oklahoma History
Nickel Deposit Near Gold Hill, Boulder County, Colorado (open access)

Nickel Deposit Near Gold Hill, Boulder County, Colorado

From Introduction: "Scattered throughout the Colorado Front Range, there are many small copper deposits, believed to be of pre-Cambrian age. The have been widely prospected but have produced little or no ore. In one of these, the Copper King mine, near Gold Hill, Colo., nickel was discovered in 1930, and development in the following years has exposed some 25,000 tons of ore containing from 2 to 3 percent of nickel. No other nickel deposit is known in the Front Range, but a somewhat similar deposit has been opened in Gem mine, near Canon City and about 120 miles south of Gold Hill."
Date: 1942
Creator: Goddard, Edwin N. & Lovering, T. S.
Object Type: Report
System: The UNT Digital Library

Denver & Rio Grande Western (DRGW) 1704 on "Exposition Flyer"

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 1704, 4-8-4, on a passenger train No. 5, "Exposition Flyer", passing through Tunnel #28, just east of Pinecliffe, CO, 25 mph.
Date: July 12, 1942
Creator: George, Preston
Object Type: Postcard
System: The Gateway to Oklahoma History
Size Consist, Chemical Analysis, and Physical Properties of 2-1/2-Inch Subbituminous Slack from the Denver, Colorado Region (open access)

Size Consist, Chemical Analysis, and Physical Properties of 2-1/2-Inch Subbituminous Slack from the Denver, Colorado Region

Report issued by the U.S. Bureau of Mines on sub-bituminous slack from Denver, Colorado. The characteristics and properties of 2-1/2 inch slack samples are listed. This report includes tables, graphs, maps, illustrations, and photographs.
Date: August 1942
Creator: Parry, V. F. & Landers, W. S.
Object Type: Report
System: The UNT Digital Library

Denver & Salt Lake (D&SL) 303

A photograph print showing Denver & Salt Lake (D&SL) 303, 4-6-0, on a passenger train, taking on water at Pine Cliff, CO.
Date: June 15, 1943
Creator: L. N.
Object Type: Photograph
System: The Gateway to Oklahoma History

[Postcard from Mabel to Mrs. M. E. Wise, November 28, 1949]

Postcard from Mabel to Mrs. M. E. Wise, thanking her for her letter, sending her apologies that Mrs. Wise's father is unwell, and promising to explain why she will be unable to visit Boulder, Colorado until February. The front of the postcard features a photograph of two women standing on a large rock inside a dark cavern. Both women are wearing trousers and t-shirts, and the woman on the right has her hair pulled back into small draped turban. They are illuminated by a light from somewhere on the ground, which also reveals the large rock formations on the cave wall behind them. At their feet is a sign that reads, "Visit Cascade Caverns." The name of the cave, "Tobacco Room," is printed at the top of the postcard.
Date: November 28, 1949
Creator: unknown
Object Type: Postcard
System: The Portal to Texas History
Hydrothermal Uranothorite in Fluorite Breccias From the Blue Jay Mine, Jamestown, Boulder County, Colorado (open access)

Hydrothermal Uranothorite in Fluorite Breccias From the Blue Jay Mine, Jamestown, Boulder County, Colorado

Report discussing the identification of hydrothermal uranothorite from fluorite breccias in Colorado and its comparison/contrasting with other uranothorites and thorites. A description of thorium halos in fluorite is given.
Date: March 1951
Creator: Phair, George & Onoda, Kiyoko
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B0322B.0187]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Among those spending Easter holidays in the city are Dr. and Mrs. Eugene F. Irey."
Date: April 8, 1952
Creator: Cobb, Richard
Object Type: Photograph
System: The Gateway to Oklahoma History
Results of exploration for uranium at the Caribou Mine, Boulder County, Colorado (open access)

Results of exploration for uranium at the Caribou Mine, Boulder County, Colorado

This report discusses the results of an exploration made for uranium sources at the Caribou Mine in Boulder County, Colorado.
Date: May 1953
Creator: Smith, Loren E. & Baker, Kenneth E.
Object Type: Report
System: The UNT Digital Library
Geology and uranium deposits of the Caribou area, Boulder County, Colorado (open access)

Geology and uranium deposits of the Caribou area, Boulder County, Colorado

A report regarding the geology and uranium deposits of the Caribou Area, in Bouler County, Colorado. This report concerns work done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
Date: March 1954
Creator: Moore, Frank B.; Cavender, Wayne S. & Kaiser, Edward Peck
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B1314.0566]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Coach John Jacobs holds the Big Seven conference 100 yard dash trophy won last week at Boulder, Colo. by Juel Sweatte."
Date: June 3, 1954
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
Reconnaissance for Radioactivity in the Gold Hill Mining Area, Boulder County, Colorado, Part 1 (open access)

Reconnaissance for Radioactivity in the Gold Hill Mining Area, Boulder County, Colorado, Part 1

Abstract: Several radioactive deposits were found as a result of reconnaissance in the Gold Hill mining area, Boulder County, Colo. The ore deposits of the area have been worked chiefly for gold. All ore shipped has come from fissure veins, most of which are gold telluride veins. There are, however, some important sulfide veins which show a vague zonal distribution of pyritic gold ores and silverlead ores. The results of this reconnaissance suggest a possible relationship of the radioactive deposits to this indistinct sulfide zoning; however, the zoning is so obscure that its practical application to prospecting for uranium is of doubtful value at the present time. Pitchblende, torbernite, metatorbernite, and schroeckingerite have been identified in specimens from the area; however, no uranium minerals have yet been identified from most of the radioactive deposits, and the uraniferous material present is probably in disseminated small particles. Although selected samples from several localities assay 0.10 percent uranium or more, the known deposits are small and probably are not of immediate economic importance
Date: February 1955
Creator: Campbell, R. H.
Object Type: Report
System: The UNT Digital Library
[Letter from Daniel W. Kempner to Esquire, February 3, 1956] (open access)

[Letter from Daniel W. Kempner to Esquire, February 3, 1956]

Letter from Daniel W. Kempner to Esquire enclosing a check in exchange for a three and one third year subscription.
Date: February 3, 1956
Creator: Kempner, Daniel W. (Daniel Webster), 1877-1956
Object Type: Letter
System: The Portal to Texas History