I will take some pics of the ones I have and then try to figure out how to post them. Thanks for the links, I have seen some of them before while researching. I would like to really nail down the actual year they were offered with some hard evidence. There are pics of dealerships with the charcoal for sale, as well as period advertising and trade show images, but they date to the late 30's and 40's. By the look of the photos the charcoal business was well established by then. The product introduction would have to have been a few years prior,