July 1914: "Forest Guard Spoerl will be camped at Panther Mountain this season and will spend the time when the fire hazard is not great, making more improvements to the trail." (The Siskiyou Bulletin)
May 1940: "Considered to be similar to Grassy Knob for length of season. Probably in fog belt." (Plans, Guard Placement, Siskiyou National Forest)
1941: The lookout was staffed for 60 days and reported to the Powers Ranger Station by way of West Coast Telephone Company.