There was a brewery in Sheridan, WY around the 1940's. I'm having trouble finding anything out about it. Does anybody have a book of old breweries? I think the maker's mark R.I.B. might be connected to it. We find those quite often around here and it was the only beer available for quite awhile. I checked http://.myinsulators.com and they don't know what it is either. Thanks for your help!