James Gang vs. Dalton Gang
I noticed in the The Battle of Mineral Springs that Nick mentioned "the Dalton Gang." Since the timing of this episode is probably 1878 or 1879 (and the Dalton Gang wasn't really active until the 1890s), this reference is typically anachronistic. The writers should have had him say "the James Gang," which would have been easy and more time appropriate.
Sloppy.
Sloppy.