July 20, 1932: “George Storms assumed his duties Tuesday at the Sweetgrass Ridge lookout.” (The Wenatchee World)
August 15, 1932: "Houses for the lookouts on Sweet Grass ridge near eight-mile, are also to be built. Work will probably be started on these projects in the near future.” (The Wenatchee Daily World)
September 4, 1936: "Another of our lookouts which can easily be reached by road id Sweetgrass Butte. Drive first to Winthrop and thence up the Chewack River to the Cub Creek road, which you follow to the lookout. The trip will take you through the beautiful Methow and Cub Creek valleys. Lovely scenery on the way and a magnificent view of the surrounding mountains from the lookout will reward you for your effort." (Brewster Herald)
Activated: March 16, 1942; Deactivated; July 1, 1943. Seattle Filter Center.
September 6, 1962: "Ward Shafer, Sweetgrass Lookout Guard, reports that a total of 240 tourists have visited his station this summer." (Herald-Reporter)
June 7, 1973: "This site was once a permanent fire lookout station, but use was discontinued in the mid-1960's. It still serves as an emergency lookout during lightning storms and high fire danger weather." (The Herald-Reporter)