After a fling in Planet Stories, a science-fiction magazine, Leydenfrost built his illustration career depicting current and futuristic machines and settings. This was not a large step away from making certain kinds of industrial design presentations. However, he had an artistic sense that set him apart from those simply skilled in product rendering, which is why his scenes were usually dramatic and halfway believable even if they dealt with future possibilities.
This was a spread in the magazine's 50th anniversary issue. Click on the illustration to enlarge.