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Central Montana Astronomy Society, Rollin Grey, P.O.Box 138, Ulm, MT 59485, phone: 406-727-8272
Southwest Montana Astronomical Society, Mike Murray, Taylor Planetarium, Museum of the Rockies, Bozeman, MT 59717, phone: 406-994-6891
Western Montana Astronomical Association, Bill Elison, 9285 Miller Creek Road, Missoula, MT 59803, phone: 406-251-2004
Yellowstone Valley Amateur Astronomers, Fred Schneider, 3627 Surrey Circle, Billings, MT 59102, phone: 406-656-5006