I think that the ones you may have heard about were: "Grimtooth's Traps" by Flying Buffalo Inc, 1981: ISBN 0-940244-75-6 and "Grimtooth's Traps Too" by BLADE, a division of Fying Buffalo Inc., 1982.
The listed address on the inside covers is: Flying Buffalo Inc., P.O. Box 1467, Scottsdale, Arizona 85252 U.S.A. I'm not sure if they're still around now.
They make 'interesting' reading, but need to be carefully vetted to lower the blatant deadliness factor - some of them do go to silly extremes, and others are quite fiendish .... Maybe you might find them in a second-hand games section of your local gaming store or the on-line merchants.
...I've been RPG'ing for quite some time now ... That's why the long-awaited Conan RPG has been a 'pleasant thrill'. I was actually and ironically thinking of doing a home-made Conan game using a D6 based System - but I guess that I was beaten to the mark ...
Happy Trapping.