· Researcher in Mobile Robotics, McGill University2024–
· General Manager of the general mix division, J. W. Allen and Co.1945–1957
· Food Technologist, Dawn Doughnut Company1936–
· Chemist, F.W. Stock and Sons1919–
· Ph.D. in Food Chemistry, George Washington University1919–
· Graduate Student, University of Idaho1914–
· Junior Chemist, National Bureau of Standards
· Ordnance Inspector, U.S. Army