September 20, 1934: Panorama photos were taken by RRS.
August 27, 1970: "The most critical was the small, but dangerous, 300-acre Mott Creek fire in the Entiat district which threatened the Tyee Lookout Station about 50 miles north of Wenatchee, in north central Washington. An observer from the station was evacuated." (The Daily Chronicle)
National Geodetic Survey
DESIGNATION - TYEE FOREST SERVICE LOH PID - SX1116 STATE/COUNTY- WA/CHELAN COUNTRY - US USGS QUAD - TYEE MTN (1987)
DESCRIBED BY COAST AND GEODETIC SURVEY 1941 (JCS) THE STATION MARK IS 6 FEET S OF THE STEPS OF THE LOOKOUT HOUSE.
TO REACH FROM WENATCHEE, GO N ON U.S. HIGHWAY 10 FOR 3.5 MILES TO THE JUNCTION OF U.S. HIGHWAY 97. TURN LEFT ONTO HIGHWAY 97 AND CONTINUE 17.0 MILES TO A STANDARD SERVICE STATION ON LEFT JUST ON S EDGE OF THE TOWN OF ENTIAT. TURN LEFT ONTO A HARD-SURFACED ROAD AND FOLLOW WESTERLY FOR 12.0 MILES TO ARDENVOIR AND A LUMBER MILL ON LEFT. TURN SHARP LEFT ACROSS A BRIDGE AND FOLLOW MAIN THOROUGHFARE THROUGH THE MILL YARDS FOR 0.2 MILE, THENCE TAKE THE MAIN-TRAVELED ROAD (MAD RIVER ROAD) WESTERLY UP A CANYON, KEEPING ON THE N SIDE OF THE RIVER FOR 3.8 MILES TO FORKS AND SIGN TYEE MT. LOOKOUT. TAKE RIGHT FORK MAIN-TRAVELED ROAD, GO 10.5 MILES TO THE END OF TRUCK TRAVEL. FROM HERE FOLLOW A WELL-DEFINED TRAIL FOR 3.0 MILES TO THE TYEE MOUNTAIN LOOKOUT HOUSE AND STATION. A 2 1/2-HOUR PACK.