Tutt Library Research Guides
Colorado Encyclopedia - Information about Colorado's past and present: people, places, events, and things. Entries are arranged by themes (Origins, Diversity, Community, Ecology, Political Economy, and Place), maps, and timelines.
Colorado Virtual Library - Features current and historical information.
Historical Census -State Demography Office
Census Quick facts - State, county, and large cities
1900 Census data for Colorado - by county or zip code
Colorado Census Records |Census Finder - 1860 forward