Centaur Studios '55 (STL)

The other day I found this wonderfully illustrated Centaur Studios business mailer brochure (postmarked 1955) at the antique mall here in St. Louis. Does anyone know anything about this studio, artist Bill Cramer, or any in their band of eager beaver creatives listed below? A quick google search didn't turn up anything at all, but I'd love to hear from anyone with info, if you worked for them, or if you know someone that did-- please please drop me a line!

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