A daily schedule of popular guided trips afield, all-day hikes, boat trips, campfire entertainments, and illustrated lectures is maintained at Many Glacier, Going-to-the-Sun, Two Medicine, Lake McDonald, Sprague Creek, and Avalanche Auto Campgrounds, the leading tourist centers. Naturalists who conduct local field trips and walks to nearby Hidden Lake and Clements Glacier are stationed at Logan Pass daily from 9 to 4. A small museum dealing with popular local natural history subjects is maintained throughout July and August at Many Glacier Ranger Station. Cut-flower exhibits are installed at various hotels and chalets, and an exhibit of rock specimens is in the lobby of Many Glacier Hotel. Requests from special parties desiring ranger naturalist assistance are given every consideration. All park visitors are urged to avail themselves of the services of the naturalists who are there to assist them in learning of the untold wonders that abound everywhere in the park. Acceptance of gratuities for this free service is strictly forbidden. For complete information on naturalist schedules and types of service offered consult the free pamphlet, Ranger-Naturalist Service, Glacier National Park. AUTOMOBILE CAMPGROUNDS For the use of the motoring public a system of free automobile campgrounds has been developed on both sides of the park. On the east side, these camps are located at Two Medicine, Cutbank, Roes Creek, and Many Glacier. The west side camps are at Bowman Lake, Fish Creek, Avalanche Creek, and Lake McDonald. Pure water, firewood, cookstoves, and sanitary facilities are available, but campers must bring their own equipment. POST OFFICES The United States post offices are located at Glacier Park, Mont., Belton, Mont., Polebridge, Mont., and (during summer season) Lake McDonald, Mont., at Lake McDonald Hotel, and Apgar, at the foot of Lake McDonald. Mail for park visitors should include in the address the name of the stopping place as well as the post office. MISCELLANEOUS Telegraph and express service is available at all points of concentration. Qualified nurses are in attendance at the hotels and both sides of the park, and there is a resident physician at Glacier Park Hotel. THE PARK'S GEOLOGIC STORY