July 16, 1931:"Burros will be assigned the task of carrying two lookout houses to the top of Cascade national forest promontories. Ready-cut materials for the lookout stations have been trucked to Elk lake, and Dee Wright and Ed Woods, veteran packers, will load the houses on muleback and carry them to the summits of Olallie butte and Horse mountain." (Morning Oregonian)
July 27, 1931: "A number of forest service men stationed in the McKenzie bridge area were taken for a flight from Eugene to the new landing field on Olallie mountain in the Cascades Monday by Harold Sander, pilot of the Hobi Aitways, in a Travelair monoplane. The first piece of express taken by air to this new field, a box of fruit for Paul Deuber, forest lookout on Olallie mountain, was taken on the flight. The fruit was delivered on the field and Deuber was to transport it to his lofty station on top of the mountain." (The Eugene Guard)
September 3, 1931: "A new lookout cabin has just been completed by the Cascade national forest on top of Olallie mountain and a new patrolman's cabin at Rigdon ranger station. Material is on the ground for a new lookout house on top of Horse mountain." (Morning Oregonian)
May 28. 1934: Panorama photos taken by Reino Sarlin.