Herman Conrad's brother, Gustave

I've been researching Herman Conrad, the world's first Sousaphonist, and learned recently that his younger brother, Gustave, was also a musician. I haven't found out yet what instrument he played, but I did get confirmation that he was a member of the Ford Motor Band - most likely from 1910, when the band was formed, until his death in 1916. He's probably one of the guys in this photo from 1915 - I just don't know which one!

Courtesy of the Hagley Library