Affiliations Research 1947Associate ProfessorCatholic University Of America1936InstructorJohns Hopkins University1937Instructor In ZoologyJohns Hopkins University1938InstructorJohns Hopkins University1939Instructor In ZoologyJohns Hopkins University 1936[subject unknown]Independent1937[subject unknown]Independent1938[subject unknown]Independent1939[subject unknown]Independent1947[subject unknown]Independent Investigators