Probably so
Seems I went to a Burger Chef a few times in the 1970’s - not a lot - shoot I remember an Arthur Treachers about 20 miles from here.
One thing I remember about 1978 or 1979 - tacos were 33 cents at Taco Bell
And the food was prepared in the store - unlike today (the meat came in bags that were boiled to warm them up - this was around 25 years ago)
McDonald’s had a burger, fries & soda deal that gave you change back from your dollar.
I remember burgers were $.25 and cheeseburgers were $.30.
NOBODY beats Whataburger, though!