Bloomington (Bloomington, Monroe County, Indiana) Evening World, July 9, 1910, p. 1. Oscar Riddle's Success. Oscar Riddle, a former Greene county school teacher and graduate of Indiana University, is in Bloomfield for a brief visit with his mother, Mrs. Amanda Riddle, and other relatives. He expects to sail for Europe July 21, where he is to deliver two lectures before the International Congress of Science to be held at Gratz, Austria. He will remain abroad probably until next April to do research work in a number of universities. He is an instructor in the department of zoology in the University of Chicago, and has traveled extensively in South America, collecting specimens for that institution.