1. Southwestern Colorado [cartographic material] / U.S. Geographical Surveys West of the 100th Creator: Geographical Surveys West of the 100th Meridian (U.S.) Published / Created: [approximately 1876] Call Number: 834 1876C Container / Volume: BRBL_00587 Image Count: 1 Resource Type: Maps, Atlases & Globes Found in: Beinecke Rare Book and Manuscript Library > Southwestern Colorado [cartographic material] / U.S. Geographical Surveys West of the 100th Meridian.