From abstract: The Little Cone quadrangle includes an area of about 59 square miles in eastern San Miguel County in southwestern Colorado. The quadrangle contains features characteristic of both the Colorado Plateaus physiographic province and the San Juan Mountains, and it has been affected by geologic events and processes of two different geologic environments.

The famous "California Zephyr" roll through Colorado on Denver and Rio Grande Western Rails, circa 1960. This modern Domeliner traveled a route of 2,532 miles from Chicago to Dan Francisco. The luxury train was jointly operated by the Burlington, Rio Grande and Western Pacific Railroads.

Rio Grande's engine No. 483 exits from Toltec Tunnel No. 2 on narrow gauge rails between Alamosa and Durango, Colorado. This is above Toltec Gorge with the Garfield Monument located about 100 feet west of the tunnel portal. Rocky cliffs are to the left of the track and a railing is to the right.

This home movie documents the daily lives and activities of the Fisher family including Cheryl’s fourth birthday and a Colorado hunting trip. Footage of Colorado landscape is largely underexposed.

From abstract: The fluorspar deposits in the Northgate district, Jackson County, Colo., are among the largest in Western United States. The mines were operated intermittently during the 1920's and again during World War II, but production during these early periods of operation was not large. Mining was begun on a larger scale in 1951, and the district has assumed a prominent position among the fluorspar producers in the United States. Within the Northgate district, Precambrian metamorphic and igneous rocks crop out largely in the Medicine Bow Mountains, and later sedimentary rocks underlie North Park and fill old stream valleys in the mountains.

Santa Fe's "The Grand Canyon", headed by nine GM Diesel Units, 18,000 horsepower, with a consist of twenty-three cars traverses Raton Pass in Mew Mexico on September 17, 1960.

Report issued by the Bureau of Mines over studies conducted on Larimer County pegmatite deposits. Descriptions of the deposits are presented. This report includes tables, maps, photographs, and illustrations.

Letter from I. H. Kempner to W. H. Louviere discussing train freight rates.

Letter from R. M. Armstrong to Imperial Sugar Company discussing company payment towards the Texas franchise tax. Armstrong is requesting information as to whether other refiners have to pay the franchise tax.

Letter to W. H. Louviere discussing tax information for The Great Western Sugar Company.

Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about a race on the backs of donkeys from Lake City, Colorado to a new housing development, Lake City, U.S.A., near Lewisville.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Eye catchers at the National Boy Scout Jamboree at Colorado Springs, Colo., are these orange and white parachute silk tents of the Great Salt Plains Council in northwestern Oklahoma."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Family affair resulted when the Kerrs from Chickasha went to the Boy Scout Jamboree at Colorado Springs."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Daily contact with the folks back home is provided Oklahoma Scouts at the National Scout Jamboree by George Lang, Muskogee, who brought his portable ham radio set to Colorado Springs."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Plenty of Boys but no girls leaves these two Nowata Scouts, Darrell Fry, left, and Norman Morris in a sad need at the National b\Boy Scout Jamboree in Colorado Springs."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Oklahoma's own are these 1,300 Boy Scouts attending the National Scout Jamboree at Colorado Springs, Colo."

Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Mr. and Mrs. Adolph Coors II, whose millionaire son disappeared near Denver Tuesday"

Photograph taken for a story in the Oklahoma Times newspaper. Caption: "is the mystery shrouding the disappearance of wealthy brewery executive Adolph Coors III."

Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "The mystery cloaking the disappearance February 9, of wealthy brewer executive Adolph Coors III lingers on and on and on."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ronnie Hartline, right, only big guy in Oklahoma's backfield, takes time out from the Sooners' workout at Denver to tell his three small backfield mates they'll have to bear down against Colorado."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Linn Long, Colorado Wrestler"

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Linn Long, Wrestler"

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Lt. Gov George Nigh of Oklahoma is presented with a troop kerchief from members of Troop of Oklahoma City, at the National Boy Scout Jamboree near Colorado Springs today. The boys left to right, are Ronald Cook, Clyde Britton, Robby Luttrell, and John Belt, all of Oklahoma City"

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Dead Sea scrolls that were found in a cave in 1946 were described here Monday as one of the most significant religious discoveries ever made."