I don’t remember a shortage in the 70s, and my kids back then would have needed it. I could be wrong. I do remember a beef shortage, gas shortage and pampers?
Well, they said there were shortages. But in actuality it was companies working in trust to keep prices high. During the “oil shortage” we could see the tankers in the ocean outside of San Pedro harbor. They had to move the ships further out so they were below the horizon. Same same “meat shortage”. There was no shortage. It was just companies working in collusion.