Links
GLO Surveyors of Washington and Oregon
Washington State Surveyors Database (All Surveyors)
GEODETIC SURVEYS IN THE UNITED STATES
THE BEGINNING AND THE NEXT ONE HUNDRED YEARS 1807 - 1940
by Joseph F. Dracup
Chester Pecore Mt. Adams Survey - Scanned 1920 photo album of Groups Survey - Note: this link will download a 170mb zipped folder with 150 photos