The Gallian

From Memory Alpha, the free Star Trek reference

The Gallian was a magazine in circulation on planet 892-IV.

In 2268, Captain James T. Kirk and Commander Spock browsed through an issue of The Gallian , where they discovered several advertised items that were all named after Roman gods, such as Mars Toothpaste, Neptune Bath Salts and the Jupiter 8 automobile. (TOS: "Bread and Circuses")