Sandy, I've never heard of those sandwiches and since reading your post called an old friend who lives just outside Springfield. He has lived there for over 30 years and his wife is a native of Springfield. Neither has heard of those named sandwiches. Could you give more info. as to what else is included and in what types of restaurants they are served please?
We just returned from our fifth trip to Hawaii and there I enjoy eating malasads, long rice, locomoco and of course the ubiquitous Spam!