Assessment rolls inventory and appraise personal and real property for taxes. Tables give name, address, legal description, value of personal and real property, amount owned per tax, and total of taxes. In later years, the county created levy districts for taxing property. The records for 1972-1975 are filed by these districts.

From 1910 to 1915, the Treasurer continued the Assessor's practice of acquiring personal data for jury service. Information includes occupation, birthplace, nationality, residency, age, literacy, and size of family.