July 20, 1932: "Nine new lookout houses are to be built at an estimated cost of $5,300. [One of] these lookouts will be on Watson butte, Diamond lake district near Thorn prairie on the divide between Clearwater and North Umpqua." (Roseburg News-Review)
1933: A lookout was established.
August 5, 1933: Panorama photos were taken by Moe and Cooper