Oregon Historical County Records Guide
Washington County Records Inventory
Corner Survey Records
Series documents the establishment and/or restoration of survey corners or monuments by the county surveyor or registered land surveyors. Records include maps, field survey restoration notes, historical notes, and indexes. Information includes description of corners; existing markers; descriptions of new markers and any changes made to the locations; property owners; township, range, and section numbers; donation land claim information; date the new markers were set; and surveyor's signatures.
The searchable iSpirits research tool includes images of public land corner records.
Records at the Public Services Building, Suite 200, Survey Division Vault:
U.S. Bearing Trees [Record-with visual index], vol. 1, 1885-1971 (1 volume);
USBT Book [United States Bearing Trees-some with index], vol. 2-10, 1971-1997 (9 volumes);
USBT Notes [United States Bearing Trees-on mylar-with index], 1997-present (4 cu.ft.).
Records at the Public Services Building, Suite 200, Survey Division Main Office:
BT Index [Bearing Trees], n.d.-present (1 volume);
BT Notes [Bearing Trees], vol. 1-11, 1885-1998 (4 inches of microfiche); 1998-2004 (1 inch of microfiche).