Inter-Mountain League was an independent league in 1891 and a Class D League in 1909.
1901 Logan UT, Ogden UT, Park City UT and Salt Lake City UT.
1902 to 1909 Not sure if this League played
1909 Boise ID, Butte MT, Helena MT, Salt Lake City UT. During the season, Boise move to Bozeman MT and Salt Lake City move to Livingston MT.