Sources!

Dictionary of Scientific Biography, C Gillispie, editor. Charles Scribner's son. 1981

Encyclopedia of World Biography. Vol. 2. 2^nd ed.  Detroit: Gale, 2004. p489-490. http://go.galegroup.com/ps/retrieve.do?sgHitCountType=None&sort=RELEVANCE&inPS=true&prodId=GVRL&userGroupName=fl_sarhs&tabID=T003&searchId=R2&resultListType=RESULT_LIST&contentSegment=&searchType=BasicSearchForm&currentPosition=1&contentSet=GALE%7CCX3404700853&&docId=GALE|CX3404700853&docType=GALE&role=