I have loaded this picture at my Mum's request. The gentleman with the moustache stood at the back shows my Mum's great uncle, her Granddad's brother. His name was Eugen Lorenz. My Mum believes he moved to New York, but she does not know whether this is where the family stayed.
I apologise, the quality of this photo is quite poor, but my Mum has always wondered if she has relatives in the USA, so why not post it here.