OK - after more searching, I poked around on ebay and found a copy of the 1974 January Motor Trend magazine - it's mostly orangeish/yellow, has Volkswagen Rabbit and Beetle profiles vertically along the unbound long edge of the cover, and even says "Rotary Corvette Model Inside" on the front cover. (Sorry to be 'descriptive' of the cover, rather than just post a pic, but I'm still new and limited)
Figured, WTH and just bought it. Hopefully, it'll show up sometime next week. SO excited!