I attach a photo of Arnold taken, as far as I know, in 1975. It shows Arnold holding a boy aloft. Has this boy ever been identified? Can anyone supply his name or some info on what became of him? I am researching where this image was taken and trying to find who this young chap is.

I know the following:

It’s not his son (his children were born in the 90s).
The photographer is: Bob Mizer
Photo date: Mid to late 1970’s

Any help is appreciated !