It’s been 34 years since “Put 'Em Down” was published ( not that it was the “great American novel” ), but I will do a revision with a Kindle eBook to start with, currently pre-sale on Amazon. I never made a dime with that “booklet” even though it was “ripped off” ( I mean sold ) all over the world. in 2016 a publisher threw a different cover on my book ( kept 100% of the original text) and started selling it as their own. It was never “public domain”…
I did not die in 2008…Alive and well !
Honestly, there were only a couple of principles and techniques ( in the original book ), that I would consider “keepers” or even bordering “profound” ( and I mean profound for 1988, considering at that time there was a large void of practical knife-defense instruction / information available )…
Thanks, Don Pentecost