Oregon Historical County Records Guide
Umatilla County Records Inventory
Tax Lot Cards
Tax lot cards, which contain official descriptions of real property, are used to track land ownership and lot size and also may serve as a deed reference. Records include tax lot number; the location of the land in reference to township, range, and section; and a description and record of changes to the property, acreage, and land owner.
Tax lot information is now maintained electronically in the Assessment Division Office.
Records at the Umatilla County Courthouse, Assessment Division Cartography
Ownership Record [title varies], 1892-1963 (10 volumes);
[Tax Lot Cards-Official Record of Description of Real Property], 1962-2000 (33 cu.ft.).
Records at the Umatilla County Courthouse, Assessment and Taxation Department Basement Vault:
Ownership Record [Assessment], vol. 1-4, 1879-1910 (4 volumes).