Karl C. "Sunny" Allan (1886-1978) was born in Ogden, Utah. He worked as a telephone lineman in the early 1900s, and was part of the Bureau of Reclamation crew that built a telephone line from Ashton, Idaho to Moran, Wyoming. In 1913, he joined the U.S. Forest Service and worked in the Targhee National Forest building telephone lines to fire lookouts. In 1918, he became a district ranger at Camas Meadows, Idaho. He worked at the Black Rock ranger station in Wyoming from 1930-1938, and the Jackson Lake ranger station in Wyoming from 1938-1942. From 1944-1956, Allan worked as a ranger in Grand Teton National Park (Wyo.) and managed the Rockefeller Wildlife Range. He and his wife, Esther, lived in the Jackson Hole area for more than 40 years.
From the description of Karl C. Allan papers, 1892-1979. (University of Wyoming, American Heritage Center). WorldCat record id: 24337132