The next two images are of the design seen most often. The first is a badge made out of metal. In the 1960's the metal badges were worn by all cast members working the attraction.
The next is actually a cloth insignia. These were worn in the 1970s and 1980s by the regular cast members. The leads wore the metal version. I believe at this time there was a limited number of metal badges still in the costume supply at the park.