Invisible Trailer?

I have seen the trailer for this film turn up on a number of compilation videos that include clips of classic creature features. Yet when this film was included in the INVISIBLE MAN Legacy DVD collection, the trailer was nowhere in sight. In fact, INVISIBLE AGENT was the only film in the set to have its trailer included. Surely all the trailers for Universal's Invisible Man films have not simply vanished, and if bargain basement companies can come up with a trailer for THE INVISIBLE WOMAN, it stands to reason that the studio that actually made the film should be able to produce the goods, as well. Given that trailers seem to be available for all the other classic Universal monsters, as well as some of Universal's lower profile titles (the 1941 version of BLACK CAT, the Captive Wild Woman films, THE CLIMAX, etc.), it seems odd the Invisible series is so sadly lacking.