Arrangement: Chronological by year. There are two volumes for some years. No index (retrieved by treasurer). Arranged internally by school district or other district.

Includes information on state tax, county tax, school tax, other tax levies (municipal taxes, poll taxes, irrigation taxes, etc.). Total tax penalty and interest, cost of advertising if delinquent, total tax paid, date paid, receipt number, and by whom paid. Prior to 1919, the assessment rolls are arranged alphabetically within the school district, and valuations are broken down by class and type of property and include real, personal, and chattel property, in addition to breakdown by type of tax found in later volumes. One volume 1956 assessment roll for irrigation and drainage.

From 1911 to 1915, the Treasurer's Assessment Rolls continued the practice of the Assessor of acquiring personal data for jury service. Information includes occupation, birth place, nationality, residency, age, literacy, and size of family.