I was stopped by a Norfolk Southern train yesterday and lo and behold there was a Gulf, Mobile & Ohio covered hopper tagging along. It apparently still had the GMO reporting marks too. All I could see of the old lettering though was "gulf" and it was barely visible from all the rust. I didn't know any of these were still around. I've got to get me a good camera and take pictures of some of these old ones before they are all gone.