Violet Ray

Violet Ray Machine instruction book cover.

Once upon a time, like the early 20th Century, before WW2, Violet Ray referred to a form of electrotherapy.

Spooky picture of Violet Ray electrotherapy wand

Joseph P. Murphy’s polygon-shaped filling station in LA 
 selling “Violet Ray” anti-knock gasoline.

Or gasoline.

Gas stations gave away roadmaps

Now it's a brand of women's handbags. I suppose it could even be a woman's name. I mean Violet is, all she'd need would be the last name of Ray.

Posthip Scott got me started with the roadmap.