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Filter: State of Colorado
Filter: Subject of industries
| Date: | 11 01 1934 |
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| Description: | Worker grading a rural road with a McCormick-Deering Model 30 industrial tractor and a pull grader. The tractor was owned by Weld County. |
| Date: | 1961 |
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| Description: | International TD-30 crawler tractor (TracTracTor) working to widen U.S. Highway 40 near Berthoud Pass in Colorado. The highway wound through the Rocky Moun... |
| Date: | 1945 |
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| Description: | View from across road of the front of the H.W. Moore Equipment Company, an International Harvester power equipment dealership. Signs on the building read: ... |
| Date: | 1907 |
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| Description: | Cover of the book The Pinkerton Labor Spy by Morris Friedman. The book was a work of non-fiction detailing the use of spies during labor disputes b... |
| Date: | 1866 |
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| Description: | A colorful map of Gilpin County, the central gold region of Colorado, surveyed by Charles W. Morse and George Hill. |
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