This directory lists by county 135 collections of local history to be found in libraries, museums, historical societies, schools, colleges, and private collections in Colorado. The directory includes only collections available in Colorado which contain bibliographic holdings such as books, newspaper files or clippings, letters, manuscripts, business records, photographs, and oral history. Each entry lists county, city, institution and address, subject areas covered by the collection, forms of material included, size of collection, use policy, and operating hours. The materials are indexed by subject and form for easy reference. (DE)