From Anne DeGersdorff:

The day began with a very pleasant walk along the Missouri River, beginning at a fish hatchery, we viewed a pool of adult "show" trout. and thousands of others waiting to be planted in other parts of this river or in other streams. A half-mile stroll took us to an interpretive center where we saw interesting stage-set-like exhibits of many events along the route of the Corps of Discovery. Our visit ended with witnessing a riveting monologue by an actor purporting to be George Shannon, the youngest member of the expedition, 30 years later. Anne DeGersdorff

Karl Bodmer's Plains Tipi

Charley Russel's Camp Fortunate

At Charley Russell's Museum we also found this excellent recipe. 

Mrs. Charley Russell's White Cake Recipe
(usual cake making procedure and baked the usual time

1/2 cup butter
1/2 cup sugar
5 egg whites beaten stiff
1 cup water
2 1/2 cups sifted cake flour
2 tsp baking powder
Cream butter and sugar; alternate liquid and flour; add egg whites last.
Cool cake before icing
Icing:
1 egg, 4 teaspoons powdered sugar to taste.
Cook in double boiler until thifck and creamy hotel

Mike Lanphere demonstrates the "Duds and Grub of the Expedition." Lewis wrote: "The first morsel the cook makes love to is about six feet of the lowerintestine of the buffalo..." and goes on to describe a delicacy cooked by Charbonneau - Boudin Blanc or White Pudding; really a sausage made by stuffing said intestine with kidney suet and leftovers.