c.1912: Two lookout trees were established at different points.
July 28, 1920: "H.E. Vincent, deputy supervisor for the Cascade national forest, went to Fall Creek yesterday to investigate Clark's Butte and Little Cowhorn mountain, to attend to the making of a 'seen' map of the area which can be seen from the lookouts there. This map will enable the supervisors to know how much land each lookout can see, and it will aid in finding and locating fires." (Morning Register)
April 17, 1922: "C.A. Logan, of Fall Creek, lookout on Clark's butte and Little Cowhorn mountain for the past several years is in Eugene to take the lookout examination Tuesday." (The Eugene Guard)
1944: A non-standard, gable roof, Lookout house was built.