I am looking for any information on Gustav Straus, who I believe settled in Nice after WWII. He was a cousin of my great-grandfather, Hugo Straus. I have a copy of a letter written by my grandfather in 1970 who mentions his widow (only referred to as Mrs. Gustav Straus) and that Gustav's hobby was compiling the family tree. I would love to get my hands on this tree. I have found references that the Strauses lived on Rue Buenos Aires in both 1948 and 1970.