| title | creator | language | description | tableOfContents | contributor | subject | created |
| Colorado Jim | Goodchild, George, 1888- | en | | | | | 2008-12-08 |
| Subspeciation in the Meadow Mouse, Microtus montanus, in Wyoming and Colorado | Anderson, Sydney, 1927- | en | | | | | 2010-03-22 |
| Two New Pocket Gophers from Wyoming and Colorado | | en | | | | Pocket gophers; Mammals -- Wyoming; Mammals -- Colorado | 2009-06-17 |
| Mammals of Mesa Verde National Park, Colorado | Anderson, Sydney, 1927- | en | | | | | 2010-01-21 |
| The Young Engineers in Colorado
Or, At Railwood Building in Earnest | Hancock, H. Irving (Harrie Irving), 1868-1922 | en | | | | | 2004-06-25 |
| The Romance of the Colorado River
The Story of its Discovery in 1840, with an Account of the Later Explorations, and with Special Reference to the Voyages of Powell through the Line of the Great Canyons | Dellenbaugh, Frederick Samuel, 1853-1935 | en | | | | Powell, John Wesley, 1834-1902; Colorado River (Colo.-Mexico) -- Description and travel; Colorado River (Colo.-Mexico) -- Discovery and exploration; Colorado River Valley (Colo.-Mexico) -- Description and travel; Colorado River Valley (Colo.-Mexico) -- Discovery and exploration; Grand Canyon (Ariz.) -- Description and travel; Grand Canyon (Ariz.) -- Discovery and exploration | 2003-08-01 |
| The Grand Cañon of the Colorado | Muir, John, 1838-1914 | en | | | | | 2004-05-01 |
| Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas | Anderson, Sydney, 1927- | en | | | | | 2010-07-19 |
| Readings on Fascism and National Socialism
Selected by members of the department of philosophy, University of Colorado | Various | en | | The Doctrine of Fascism by Benito Mussolini -- The Political Doctrine of Fascism by Alfredo Rocco -- The Philosophic Basis of Fascism by Giovanni Gentile -- National Socialism by Murphy, Stevens, Trivers, Roland -- National-Socialism and Medicine by Dr. F. Hamburger. | | | 2004-11-16 |
| Peak and Prairie
From a Colorado Sketch-book | Fuller, Anna, 1853-1916 | en | | Preface -- A pilgrim in the far West -- Brian Boru -- Jake Stanwood's gal -- At the Keith ranch -- The Rumpety case -- The Lame Gulch professor -- The boss of the wheel -- Mr. Fetherbee's adventure -- An amateur gamble -- A Rocky Mountain shipwreck -- A stroke in the game -- The blizzard picnic -- A golden vista. | Moore, Emma G. [Illustrator] | Frontier and pioneer life -- Fiction; Colorado -- Social life and customs -- Fiction | 2007-08-03 |
| The Boys of Crawford's Basin
The Story of a Mountain Ranch in the Early Days of Colorado | Hamp, Sidford F. (Sidford Frederick), 1855-1919 | en | | | Emerson, Chase [Illustrator] | Western stories; Ranches -- Juvenile fiction; Colorado -- Juvenile fiction | 2008-08-26 |
| A New Subspecies of Wood Rat (Neotoma mexicana) from Colorado | Finley, Robert B. | en | | | | | 2010-02-01 |
| Seventeen Species of Bats Recorded from Barro Colorado Island, Panama Canal Zone | | en | | | | | 2009-05-17 |
| Mammals of the Grand Mesa, Colorado | Anderson, Sydney, 1927- | en | | | | | 2010-02-15 |
| John L. Stoddard's Lectures, Vol. 10 (of 10)
Southern California; Grand Canon of the Colorado River; Yellowstone National Park | Stoddard, John L. (John Lawson), 1850-1931 | en | | | | | 2005-04-02 |
| A Canyon Voyage
The Narrative of the Second Powell Expedition down the
Green-Colorado River from Wyoming, and the Explorations
on Land, in the Years 1871 and 1872 | Dellenbaugh, Frederick Samuel, 1853-1935 | en | | | | | 2007-02-25 |
| A New Pocket Gopher (Genus Thomomys) From Wyoming and Colorado | Hall, E. Raymond (Eugene Raymond), 1902-1986 | en | | | | | 2010-09-06 |
| Canyons of the Colorado | Powell, John Wesley, 1834-1902 | en | | | | Colorado River (Colo.-Mexico); Grand Canyon (Ariz.); United States -- Discovery and exploration | 2005-05-01 |