I finally found time to check out the May 1960 issue of Sports Cars Illustrated I picked up off eBay. If I understand correctly, this was the precursor to Car and Driver.
What made this interesting to me was not only is this from the same month and year that our car was delivered, but it is also one of the very first reviews of the Super 90.
The magazine is in near mint condition, so I scanned all the 356 related pages so I can look and read at my convenience without worrying about damaging the issue. You can download a PDF version if you’re interested.