Oregon Atlas of Historical County Boundaries
John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Emily Kelley, Historical Compiler; Laura Rico-Beck, GIS Specialist and Digital Compiler; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant
Copyright The Newberry Library 2007
CHAMPOEG (now MARION)
CLARK (Wash.) (created as VANCOUVER)
Disputed Area (San Juan Islands, Wash.)
ISLAND (Wash.)
JEFFERSON (Wash.)
KING (Wash.)
LEWIS (Wash.)
PACIFIC (Wash.)
PIERCE (Wash.)
THURSTON (Wash.)
TUALITY (now WASHINGTON)
VANCOUVER (Wash.) (now CLARK, Wash.)
WASHINGTON (created as TUALITY)