There is a battle between women armed with swords against men armed with swords, pistols, and long guns with bayonets, but the men never fire their guns.
The Butterfly Gold pattern on the cup on Montrose's table was not introduced until 1970, fifteen years after the events of this episode take place.
Hippolyta mentions reading an article about the many worlds hypothesis. However, the show takes place in 1955 and the many worlds hypothesis was first proposed by physicist Hugh Everett III in 1957, two years later.