Is that like an energy bar from the 70's? I didnt think they starting making them until the late 80's.
"Health" bars of various forms have been around at least since the mid-70's, and I suspect they first started making appearances in one form or another, in the 1960's. In my candy research, I've found images of a Nabisco "Fastbreak" bar from around 76 or 77, which was meant to be an all-natural, healthier alternative to the standard candy bar. I've seen others, as well.
I don't know that they'd have called them "energy bars", as that term may have only come into vogue in the late 80's, though. I'd also add that, before I started finding reference to them in my various research endeavors, I'd have assumed they were a 1980's invention as well.
