The Santa Barbara County Court Records contain over 2,300 court cases beginning with California statehood through the first decade of the 20th century. The variety of court cases represented span legal proceedings from debt settlement to probate to murder. The plaintiff and defendant names documented in these cases are a Who's Who of notable Santa Barbara Californios and early American settlers.

The Santa Barbara County Tax Assessment Records collection contains oversize handwritten volumes of Assessment Rolls, Assessors Book of Mortgages, Cash Books for Tax Assessment Rolls, Delinquent Assessment Rolls, and Duplicate Assessment Rolls.