In Chapter: 7, during the last half of the episode, when the Huron's are getting into their canoes, if you look to the upper left of the film, you can see a speedboat passing from right to left in the distance.
In Chapter: 9, Hawkeye (Harry Carey) waves his hand to the off-screen movie crew, to signal them its time to drop the burning wood as he exits through the trapdoor in the floor.