I am fairly sure there is a picture of an adult Meinhardt in Wendy Leigh's book "Arnold".
What is very weird is I never knew Arnold had a brother until I red her book.
He has never mentioned a brother in any of his books, including "Education o f a Bodybuilder" his auto biography. Now, when you write an auto biography you would your FULL family members in .
He must not have ever recovered from it.
It has been widely reported that Arnold fully supported his brothers child/children, and the mother. Which makes sense.