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Top level collections


Meeting materials of Jefferson County's volunteer boards and commissions, including minutes, agendas, and supplemental items.

A group of photos, letters and news clippings about the famous hackberry tree on Arvada's Hackberry Hill, compiled by the Archives. In 1936, the Colorado Highway Department and Works Progress Administration (WPA) planned to straighten Wadsworth Ave. over the top of the hill requiring destruction of the tree. Due to citizen opposition, the State made plans to transplant the tree instead. A ditch was dug around it in preparation for the move. However, one night in January, 1937, an Arvada man, tired of all the fuss, cut the tree down before they could finish the job.

Alphabetical lists of property owners showing land or personal property owned, taxes assessed and taxes paid.

1866-1868, 1870-1948

Records of the proceedings of the Jefferson County Board of County Commissioners


Records of the Colorado Cooperative Extension Program in Jefferson County

1920, 1936

Plats, maps and statements of claim to water rights for ditches, reservoirs and water supply sources recorded in Jefferson County, Colorado.


Records for genealogical research

Scrapbooks created by members of home demonstration clubs in Jefferson County


Articles of incorporation and financial reports of companies seeking to incorporate and conduct business within Jefferson County. Includes some municipal incorporations.

Collections related to the history of Jefferson County that are not Jeffco government records.


Other records created by Jefferson County government


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