[1] Daniel Sylvester Tuttle was chosen as missionary bishop of Montana, Idaho and Utah on October 5, 1866, and was consecrated on May 1, 1867.

George Foote and T. W. Haskins, who held the first church service at Independence Hall in May 1867, preceded him.

Under his leadership, numerous churches were opened in mining and other communities, including missions to the Ute Indians in the Uintah Basin.

St. Mark's Hospital was organized in 1872 with representatives from the Episcopal Church, Camp Douglas and the mining industry.

The hospital moved to increasingly larger quarters several times, and is now located at 1200 East and 3900 South.