c.1920: An Alidade located on the top of the Rock.
September 12, 1920: "Miss Vida Derflinger, who has been stationed as a first lookout during the summer above Oakridge, has returned to Eugene. She was accompanied by her mother." (Morning Register)
c.1925: A standard D-6 cupola lookout house was built.
June 26, 1925: "The national forest offices here began sending out its lookouts today, which is somewhat earlier than usual, but the humidity is very low and with high temperatures the forest fire menace is held to be very great. The first lookout was sent to Larison rock, above Oakridge, and others will follow during the next few days to other stations in the Cascades." (Morning Oregonian)
June 7, 1929: "Mrs. Maude Forkner will spend the summer on the federal forest look-out station at Oakridge, where her husband will be ranger." (The Oregon Statesman)
September 18, 1929: "Although a terribly dense smoke blanket hung over the Larison Rock district near Oakridge, when she left it, the forest fire situation in that immediate vicinity was nothing alarming, Mrs. R.A. Forkner said upon her return to Salem Tuesday, after spending the summer at Larison Rock, where her husband is lookout. Mrs. Forkner, who is a teacher at Englewood school, returned to be here for opening of school next Monday. Mr. Forkner will not return until after the first fall rains. (The Oregon Statesman)
August 15, 1930: "Lightning struck within 200 yards of the Larison rock lookout station in the Cascade national forest above Oakridge this afternoon. The lookout, E. Melvin Spatz, stood by the telephone and notified ranger headquarters of all the fires he could spot and then went out and extinguished the one in a tree which the lightning had struck." (Morning Oregonian)
1940: An L-4 model 1936 lookout house was constructed.