Harry was born November 17, 1886 and lived a long life till August 6, 1977. His mother was Dora Moderhack (1856-1894). Harry was 8 years old when his mother passed. I couldn’t find info on his cousin of the same last name.
There are very, very few Moderhacks in the US so if you live here, searched your name and found these pictures, they are most likely of your ancestors.
Though Moderhack is German of origin, Harry has interesting and beautiful eyes, and his smile is charmingly crooked. Was he of mixed race with some asian or native American up the line somewhere? Maybe. These pictures were most likely taken in the 1910s.
Note these two were early adopters of the all-in-one shirt +collar. Those became common in the twenties while starched detachable collars were still in fashion.
RPPC: AZO 1904-1918