Hate to admit to you Old-Timers... but in 1975 I was 7 years old.
My name is "John" and at 6'4", 260lbs qualifies me as "BIG"
About the same age as me - THAT "Big John" is my dad, that is what is riding buddies called him (one sent that picture a few years ago). He was a very talented and successful regional Mid-west amateur motorcycle off-road/track racer in the '70s. I think he still has more bikes than me.