Businessman. Fruehauf was Chairman of the Board for the Fruehauf Trailer Corporation. He became chairman after his brother, Harvey Fruehauf retired. He helped produce semi-trailers equipped to ride railroad flatcars.  Family links:  Parents:  August Charles Fruehauf (1868 – 1930)  Sibling:  Harvey Fruehauf (1893 – 1968)*  Roy August Fruehauf (1908 – 1965) *Calculated relationship