COSMIC DEBRIS: Unlock Character Analysis With Key Books!

For just $2.00 apiece - or three for $5.00 - you too can unlock the secrets of character analysis. The folks at Key Publishing Company have even included a "no-risk" coupon, so frankly you'd be wasting money if you didn't order all of 'em!

For some reason, the ad doesn't credit the authors of each book, which include Walter B. Gibson, Felix Fairfax, and Leona Lehman ... plus our old friend Dr. Leo L. Martello!

I guess the overall theme was more important - buy now!

From Fate magazine, Volume 23 - Number 11, November 1970.