September 17, 1954: "Seven men are now working on the new Jumbo lookout in the Big Prairie District. Materials for the lookout were flown from Missoula to the landing field at Basin creek from which they are being packed about five miles to the station site. The new lookout is expected to be completed in about two weeks. (The Daily Inter Lake)
National Geodetic Survey
DESIGNATION - JUMBO MTN LOOKOUT HOUSE PID - ST0577 STATE/COUNTY- MT/POWELL COUNTRY - US USGS QUAD - PILOT PEAK (1994) STATION DESCRIPTION
DESCRIBED BY COAST AND GEODETIC SURVEY 1960 (OSR) THE STATION IS THE TOP-CENTER OF THE LOOKOUT HOUSE. IT IS ABOUT 2-1/2 MILES EAST-NORTHEAST OF HAHN CREEK GUARD STATION, 3 MILES SOUTHWEST OF THE BASIN CR. LANDING STRIP AND IN SECTION 20, T 19 N, R 12 W. IT IS WOODEN STRUCTURE APPROXIMATELY 14 FEET SQUARE AND 14 FEET HIGH. ELEVATION APPROXIMATELY 8255 FEET.