The first pizza I ever had was in 1971 when I was 21. It was an Oh Boy frozen pizza and it was quite good. No pizza parlors near me back then. I bought Oh Boy pizzas often at that time period but you can can't find that brand anymore.
I have admit that I never heard of them.
The first pizza I ever had was in 1963 on 85th in NYC at an Italian food joint - one of many at the time - mostly Sicilians and a few from Rome or nearby. Nothing ever came close except pizzas by my Italian neighbors.
They were always thin crusted and crunchy with home made toppings and sauces. There were no frozen pizzas then and frozen anything was new so everything more or less had to be made from scratch