While looking through Google Books for some info on Jack Kochman Hell Drivers I found an ad for "The Spacegirls", Victoria & Duina Zacchini.
Girls and guns. What's better than that?
At one time they were at least a trio.
Who knew they were sisters? Well, if you read the first ad you would have.
In April of 1948 Life magazine wrote an article about The Zacchinis.
I've got nothing else.