The Madison Valley Public Library (210 E. Main St., 406/682-7244) may be the only library that lends fishing rods as well as books!
The Ennis Chamber of Commerce (406/682-4388, www.ennischamber.com ) is a good source of general information about Ennis  and member businesses. The area around Ennis is part of the Beaverhead Deer Lodge National Forest.
The local ranger station (just west of town at 5 Forest Service Rd., 406/682-4253, www.fs.fed.us/r1/b-d ) has maps and information on recreation and camping.
Call the Madison Valley Hospital at 406/682-4222.