September 10, 1806, Wednesday: The Return crew encountered Alexander La Fass and three french men from St. Louis in a small perogue, after an early morning and a good head start on the river, who were on their way to trade with the Pawnee at the Platte River. They offered the group a any supplies, a bottle of whiskey was supplied. Shortly after, 7 more men in a large perogue en route to trade with the Omaha Indians, in charge was Joseph La Croix. Camp was set up about 4 miles after the second encounter, for a total of 65 miles today.
The perogue boats were by far the most typical of the time for rivers like the Missouri. The large perogues had a capacity of 14 ton, or 28,000 lbs. Clark made sketches of the boat, and they’re talked about throughout the journals. Many had covered areas for resting and dry storage, including cabins. Clark described their perogue as the “soldier’s” configuration. On the return journey down the Missouri in 1806, Lewis replaced the torn and useless canvas awning with stitched-together elk skins.
More info here: https://lewis-clark.org/boats/pirogues/