I worked at mcdonalds in 1993 and earned $4.40 per hour.
Of course in 1968, a new car was less than $3k a gallon of gas was 34 cents.
I think you should go back to that mcdonalds and sue for back pay though, because in 1968 the federal minimum wage was $1.60 per hour. (In 1967, it was $1.40)