At the end, the song "In the Garden" is sung in the saloon. However, the songwriter himself, C. Austin Miles, was only born in 1868, and the song wasn't published until 1912.
Near the end of this episode, a woman and mandolin playing man are accompanied by a piano player in a rendition of the hymn: "In The Garden". It is a beautiful song written by a man named Charles A. Miles. Though Mr. Miles was born in 1868, and therefor alive in the year in which this episode was set, the song was not written nor published until 1912.