Dave Duax was on the Eau Claire County Board of Supervisors from 1974-1983. The collection consists of his files from his time on the board documenting county government activities, including survey results, correspondence, committee reports and activities, employment, budget planning, department management and law enforcement.

Proceedings include minutes of Board meetings, committee reports, reports of county officers and commissions, financial reports, and communications to the board.

Tax rolls for real and personal property indicating land ownership and providing description of taxable real estate, valuation of each parcel, taxes due, and a record of the payment of taxes. Also includes valuations, taxes due, and taxes paid for personal property in many of the volumes. Tax rolls from 1965-1995 exist for every five years. Tax rolls for the city of Eau Claire are not included in this series. (See Eau Claire Series 15.)