Arrangement: Volumes are arranged chronologically. Entries in volumes from 1909-1914, 1924-1949 are listed according to school district, irrigation district, and special sections (county property, omitted property, etc.) under which names are recorded alphabetically. Entries in volumes from 1915-1923 are recorded alphabetically.

Filed on the respective shelves are indexes to assessment rolls for 1909-1912, 1914-1936, 1940-1942, 1944-1947.

Assessment rolls inventory and appraise personal and real property for tax purposes. The total amount of tax is then apportioned under the various county and state taxes. Tables list name and address, legal description of real property, value of real and personal property, amount owed for specific taxes and date paid.

From 1910 to 1919, the Treasurer's assessment rolls continued the practice of the Assessor of acquiring personal information for jury service. Entries list occupation, birth place, nationality, residency, age, literacy, and size of family. Many of the forms from 1916-1919 however were not used. The 1950-1992 foll and lists are on security microfilm.