During his introduction, James Garner states that they brought back the character of Samantha Crawford for another appearance, because they got a large amount of mail from fans who really enjoyed her first appearance on the show.
Wilhelm Scream can be heard in the scene where the character Samantha shoots the Indian at about 33:38.
Samantha mentions scrambled eggs with pineapple for breakfast after they jumped off of the steamboat. Pineapple was known at the time but usually eaten only by the very rich and royalty. The big Hawaiian plantations were not planted until 1900 so not common in the 1870s in the western or midwestern united states.