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Henry is sitting on the running board of this car, and son, Billy, is sitting on the fender. Judging by the size of Billy, this photo was probably taken about 1940-1941. [Sorry, I don't know a thing about cars, so someone with an eye for that sort of thing may be able to give a better date. Billy was born in 1936 and appear to be 4 or 5 years of age in this photo.]
Henry [1902-1977] was the son of Henry Dreher Sr. and Josephine Benzel. He married Irene Banet [1906-1989] in 1923. The couple had five children: Ethel, Art, Marion, Billy [pictured here] and Lois.
Billy [b. 1936] married Phyllis Charley in 1957, and they had four children.