Oregon Historical County Records Guide
Clackamas 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.
Records at the Clackamas County Assessment and Taxation Office:
[Land Ownership Books-includes deed and chronological ownership information], ca.1966-2000 (273 volumes).
Records at the Clackamas County Assessment and Taxation Office, Cartography Area:
Old Ownership Books [Land Book-includes tax lot information], n.d. (1 inch of microfiche).
Records at the Clackamas County Web Site:
Clackamas County CMAP Database [GIS mapping system includes layers for many boundaries, districts, streams, tax lots, zoning, and other subjects], n.d.-present (Internet).