Washington Department of Natural Resources 27N-7E-23
1930: "The Lookout in Snohomish County overlooks a large area of logged-off lands of King County. The lookout was of the standard type adopted by the Association in 1929." (23rd Annual Report of the Washington Forest Fire Association)
1939: The High Rock Lookout was discontinued, the territory viewed by this lookout was taken over by the Blue Mountain Lookout. (32nd Annual Report of the Washington Forest Fire Association)
1944: "One lookout was erected by the Association in Southern Snohomish County, on High Rock. This was a point at one time used in fire detection, but was expected to be overshadowed by a primary tower erected by the CCC in 1937. However, the plan did not fully work out, and it was found necessary to reconstitute High Rock as a lookout point in 1944. The building is of the type which has living quarters in the base, and a ten foot square glassed in lookout house in the upper story. The type was developed by the Association in 1941 and has been quite successfully used since that date, as several were placed in use by the Air Raid Warning Service." (37th Annual Report of the Washington Forest Fire Association)
1956-58: A lookout was completed on High Rock during the biennium. (1st Biennial Report of the Washington Department of Natural Resources)
National Geodetic Survey
DESCRIBED BY WASHINGTON GEODETIC SURVEY 1937 STATION IS THE CENTER OF THE LOOKOUT BY THAT NAME, WHICH STANDS AT THE TOP OF THE 1300-FOOT (+) HILL, A QUARTER OF A MILE SE OF LAKE HANNAN. STATION IS NEAR S 1/4 CORNER OF SEC. 23, T.27, R.7. A MARK IN BOULDER WAS SET UNDER THIS MONUMENT WITHOUT THE AID OF AN INSTRUMENT. SIGHTS WERE TAKEN TO CENTER POLE OF TOWER. GROUND STATION MUST BE SHIFTED UNDER CENTER POINT OF TOWER.
STATION RECOVERY (1952)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1952 STATION RECOVERED IN GOOD CONDITION. THE PRESENT LOOKOUT IS A HOUSE WITH A CUPOLA LOOKOUT. THE STATION MARK IS 1 FT. S OF THE CORNER OF THE LOOKOUT HOUSE.
STATION RECOVERY (1960)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (VT) STATION FOUND DESTROYED. THIS STATION COULD NOT BE FOUND. NO BRASS CAP OR OTHER DEFINITE MARK COULD BE FOUND AT THE LOCATION DESCRIBED IN 1952 AS BEING 15.3 FEET NE OF REFERENCE MARK. THE LOOKOUT HOUSE HAS BEEN BURNED. REFERENCE MARK WAS FOUND. CAREFUL MEASUREMENTS WERE TAKEN FROM REFERENCE MARK AND REMAINS OF LOOKOUT, AND ROCKS CAREFULLY SWEPT. NOTHING COULD BE FOUND TO DEFINITELY LOCATE THIS STATION.