Revealing mistake: The baby Robert William Pedro is actually a girl. You can see it in the scene where the baby is greased.
Continuity mistake: Oliver Hardy, a street musician, enters a tavern along with his five bandmates. To the right of the door is a sign reading "Cheese sandwich, 5 cents." When the bandmates leave the tavern, the sign says "Cheese sandwiches." When Ollie exits, the sign once again says "Cheese sandwich, 5 cents."