The first article I read about those loops was in "73 Mag" and called "What's The Scoop On The Lazy Loop". That was at least 15-20 years ago. It was an easy up design for 160 and 80/75 meters and it worked like charm. A couple of issues later they followed it up with tests from 10 to 40. It was a killer on 40, but from 30/20 on down it might as well have been a long wire as far as tx'ing. It was a great all band receive antenna.
I miss ol' Wayne, he once had a writer put a light bulb on a 4"x4" post to prove the old adage, "I can talk dx through a light bulb". They did, but it's hard to tell how much power they were running into it.