The shoe industry, by and large, is not given to humor. But for about a century or so, Dunn & McCarthy Shoe Company, with facilities in Auburn and Binghamton, New York, got away with this punny brand name:
This advertisement came out in about 1960; it was 1965 or so before I realized what was being said here. (Then again, it was 1965 or so before I had any reason to notice this sort of thing in the first place.)
There exists a copy of an Enna Jetticks radio spot from the early 1930s:
Also in the Thirties, EJ bought a fleet of four Glenn Curtiss Aerocar travel trailers for promotional purposes.
Dunn & McCarthy, in business since about 1870, were evidently still in business in the early 1970s:
Falcon Footwear, last owners of the Enna Jetticks trademark, allowed it to slide into desuetude early in the 21st century.