James W. Bosler came to Wyoming in the 1860s. He worked as an army beef contractor, dealing with the military and Indian agencies in Wyoming, Colorado, and New Mexico. He had ranching interests in Iowa, Nebraska, Wyoming, and New Mexico. His son, Frank Bosler Sr. (1870-1918) was engaged in banking in Carlisle, Pennsylvania. While maintaining interests and residence in Carlisle, Frank came to Wyoming and became president and general manager of the Diamond Cattle Company, major owner of the Iron Mountain Ranch Company, one of the owners and general manager of the Rock Creek Conservation Company, head of the Iron Mountain Alloy Company, and owner of the Ione Ranch. He organized the original Rock Creek Conservation Company which started the irrigation project developing farming in the Rock River area. Frank C. Bosler Jr. (1916-1993) spent most of his life in Albany County, Wyoming. With his mother, Elizabeth, he owned and operated several large ranch properties near Rock River and McFadden, Wyoming. He also served as a county commissioner for Albany County, Wyoming.
From the guide to the Bosler Family Papers, 1864-1930, (University of Wyoming. American Heritage Center.)