Good old Reynold's Wrap aluminum foil. The ad seen in the photo below is the coolest - a double page spread from a 1955 magazine - the pages are actually made of foil on one side!
A scanned close-up:
Pardon the scribbles on this 1956 advertisement; this particular magazine has a lot of them!
Tips for tastier turkey in this ad from 1966. Is it crazy that I still remember the little song from their commercials years ago? "Reynold's Wrap is oven-tempered, for flexible strength."
And here, from 1975, their Heavy Duty foil in a larger size - the better to wrap your fish for freezing, my dear!
As we approach Earth Day , I applaud Reynolds for now offering foil made with 100% recycled aluminum: