Here are more postcards published by Great Northern subsidiary, the Glacier Park Company. The first one shows a Park Service ranger leading a group of people up the Grinnell Glacier Trail, which some consider to be the finest hike in the park.
The glacier is 5.5 miles from Many Glacier Hotel, but hikers can save most of that by taking a boat trip up Swiftcurrent and Josephine lakes. Not to get too political, but Grinnell and other glaciers in the park have been shrinking almost since the park was created; such shrinkage is independent of human-caused global warming. The postcard credits the photo to McMinnville, Oregon photographer Walt Dyke, who–besides being a cousin of Ray Atkeson–was a professor and researcher at Linfield College.
Here a ranger is showing a crevasse on Grinnell Glacier to a group of hikers. Is this the same group as in the previous postcard? It doesn’t look like the same crowd of people, and this photo is credited to Bob and Ira Spring, suggesting it may have been taken on a different trip.