The Black Cat patch was produced by the crew of STS-13 to celebrate the unlucky number 13 in their original flight designation. At the same time the official STS-41C emblem was being designed, an underground patch with a black cat and a number “13” was also being designed and quitely circulated. It was rumored that as few as 20 original patches (but likely no more than 50) were produced for distribution amongst the crew. The “Black Cat” artwork was designed by the late Dick Scobee. Retrorocket Emblems secured permission to produce the patch from the Scobee family on a limited, 50 patch run.