I am doing historical research on Petrolia Pa and the Sonneborn Brothers Dr. Ferdinand and Sigmund who purchased Daugherty Refinery in 1908. I am looking for their and other extended family history as well as the German scientists they recruited and who fled Nazi Germany.( Dr. Hans Shindler DRS. Geo. Kessler,Leo Salzman, Kinsel,Breth, Henry Sonneborn III). if you have any information it would be appreciated. Sincerely Joe McCloskey Petrolia area Historical Project Manager.
