1948: A L-4 ground cabin was built as a replacement.
July 2, 1959: “Sex peak Monday became the first lookout station in the Trout Creek ranger district to be manned for the summer.” (Sanders County Ledger)
August 30, 1962: "Civilization reached Sex Peak in the Trout Creek ranger district Thursday when bulldozers punched through a road to the front door of the lookout on the 5796-foot high mountain. Fire guard George Lejnieks of Albany, N.Y. greeted Harold Heater and Elmer Butte, who operated the machines for Oliver and Oliver, logging contractors, with 'open arms' for the road meant an end to the lonely fire vigil he had maintained since June 26 with only one weekend off. As proof that civilization had arrived at the peak and put an end to the peace and tranquility which the mountain top had known, one of the first things the dozers accomplished was to push a feed trough for horses over the side of the mountain. Before the dozers left the peak's top Friday to head for new roads to conquer, they constructed a helispot for use in future fire fighting. Pickups, trucks and jeeps and helicopters now will take over where pack horses were used before. Sex peak, in the summer as least, likely will never be the same again." (Sanders County Ledger)
July 16, 1970: "Kenneth and Ruth Harris, Bisbee, Ariz., are at Sex Peak. Harris is a professor of aeronautics at a community college and has been working lookouts since 1960." (Sandpoint News Bulletin)
1986: The lookout was refurbished and placed in the Recreational Rental program.
National Geodetic Survey
DESIGNATION - SEX PEAK LOOKOUT HOUSE PID - SU1047 STATE/COUNTY- MT/SANDERS COUNTRY - US USGS QUAD - BLACK PEAK (1988)
DESCRIBED BY COAST AND GEODETIC SURVEY 1940 (ANS) SEX PEAK FOREST SERVICE LOOKOUT HOUSE IS IN THE CABINET NATIONAL FOREST, 16 MILES NW OF THOMPSON FALLS, 8 MILES S OF TROUT CREEK RANGER STATION AND 5 MILES E OF MONTANA AND IDAHO STATE LINE. THE CENTER OF THE HOUSE WAS INTERSECTED.