19??: A tent camp was established with a ground mounted alidade.
192?: A gable roof log structure with a cupola was erected.
1960: An R-6 flat roof cabin was constructed atop an 8-foot high cinder block base.
October 16, 1975: "The Salmon National Forest is to furnish a radio for installation at Sheep Hill lookout on the Nezperce to provide a radio link with Butte Point lookout or direct to the North Fork river patrol." (Recorder Herald)