Rock Creek Cattle Co. has 2 as well, one for members...
Their member logo is really neat. A Sand Hills-style cattle branding.
I agree the member logo at RCCC is great. When I was there this summer, it seemed like all the best stuff in the shop had the member logo.
Also - Plainfield has 2 logos - one is the PCC in a shield and the other a very neat blue and white striped flag.