CZ Books I won't be Reprinting

As I plan to continue reprinting classic cryptozoological texts (albeit in paperback rather than ebook form), I've been looking into which titles are available. Not all old cryptozoology books are in the public domain, and unfortunately, it can be difficult to track down estates as copyright renewals are not accompanied by contact information. So, I'll leave those for publishers with the money and wherewithal to do so.

So, what titles are still under copyright here in the U.S.? These include:
The Spotted Lion (1937), by Kenneth C. Gandar Dower
The Sherpa and the Snowman (1955), Charles Stonor
The Abominable Snowman Adventure (1955), Ralph Izzard
Most, if not all, of Willie Ley's books (Exotic Zoology, etc.)

Of course, not all public domain texts are worth reprinting at present, either.

Cryptozoology books that are in the public domain, but which have already been reprinted recently:
The Hunt for the Buru (1951), Ralph Izzard
Abominable Snowmen: Legend come to Life (1961), Ivan T. Sanderson

A few other texts are in the public domain, but wouldn't be of great interest, such as:
One or two of Tim Dinsdale's earliest Loch Ness books, but these don't include the later revised editions which are still copyright protected.
Robert Marshall's Onza book, as there are plenty of inexpensive copies of the original version still available.

That does leave a few (very few, overall) cryptozoology texts available for reprinting. Assuming no difficulties, I should have several available by the end of the year.