The character Charring wears a Captain's insignia and several characters refer to him as such, yet the credits call him a Lieutenant.
When Maude Webber is telling how Sweet Betsy of Pike got drunk and mooned a whole wagon train, she sings a line as "They broke the whiskey and Betsy got tight." Some music books give the line as "broke OUT the whiskey," others omit the word "out."
Maude Webber sings "Sweet Betsy from Pike" in 1845. While some versions of this song date back to the 18th century, she is singing the version that refers to the California Gold Rush of 1849.
Jean Marshek uses the expression "pull the plug," which is not attested before the 1920s. To be fair, a person in the 1840s could have come up with such an expression, if it referred to a drain plug, rather than an electric plug.
Nancy Belacourt is supposedly from Virginia, but her accent sounds more typical of Georgia or Alabama.