1938: The lookout structure was constructed by members of the Civilian Conservation Corps.
August 8, 1939: "Forest cover in the Sawtooth area is extremely dry and the entire forest area is now placed in period four, listed as the extreme danger period, it was announced here this afternoon by W.J. Prevol, Halley, acting forest supervisor. Emergency guards and patrolmen have been placed to secure prompt detection and action on fires that do start. A new lookout has been constructed in the vicinity of Fourth of July creek and has been named 'Horton Peak' lookout in honor of William Horton, ranger in that district until he retired in 1929. This lookout, Prevol explained, will furnish good protection for the entire Sawtooth valley which extends from Galena summit to Stanley, a considerable portion of this ground being in the Idaho primitive area." (Idaho Evening Times)
National Geodetic Survey
DESIGNATION - HORTON PID - OZ0972 STATE/COUNTY- ID/CUSTER COUNTRY - US USGS QUAD - HORTON PEAK (1970)
DESCRIBED BY US GEOLOGICAL SURVEY 1961 LOCATED ABOUT 5.0 MI. (AIRLINE) NE. OF THE E. END OF PERKINS LAKE AND ABOUT 5.7 MI. SE. BY E. OF THE E. END OF PETITT LAKE, ON THE SAME TOP BEING OCCUPIED BY HORTON LOT.