July 24, 1940: "Ranger White announced the establishment of a new lookout in the district. The lookout, to be erected soon after the first of July, will be located on Grassy mountain on the continental divide, north of the pass on the Mill creek road. It will be a tent lookout, White said. Observation points will be set up outside the tent, and the tent used by the lookout forester. A lightning protection system will be installed to assure the forester complete safety during a storm." (The Sanders County Independent-Ledger)
September 17, 1940: "The Grassy Mountain and Horseshoe Peak stations in operation this year were emergency lookouts, with the guards stationed in a tent camp." (Montana Butte Standard)
July 5, 1947: "A family of three will be among forest fire lookouts who will start a summer-long vigil in towers on lonely western mountain peaks Tuesday. Rudy Forehand of Anaconda, his wife and their 3-month-old baby will take over the Grassy Mountain post in wilderness near Anaconda. Father and mother will take turns watching timber fires and tending the baby. Many of the lookouts to be posted next week in national forests of Montana, Idaho and Washington are college students." (The Billings Gazette)
National Geodetic Survey
DESIGNATION - GRASSY HILL LOOKOUT TOWER PID - RX0983 STATE/COUNTY- MT/DEER LODGE COUNTRY - US USGS QUAD - MOUNT HAGGIN (1996)
DESCRIBED BY COAST AND GEODETIC SURVEY 1956 (WFD) THE STATION IS LOCATED ON A HIGH GRASSY HILL ABOUT 7 MILES SOUTH-SOUTHEAST OF ANACONDA AND 6 MILES SOUTHEAST OF MT HAGGIN. IT IS A WOODEN STRUCTURE, AND ABOUT 25 FEET IN HEIGHT. THE POINT OBSERVED WAS THE APEX OF THE ROOF. THIS STATION WAS NOT VISITED, AND THE VERTICAL ANGLES WERE TAKEN AT GROUND LEVEL.