Past affiliation(s) within the IAU

• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1994-1997)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1991-1994)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1988-1991)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1985-1988)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1982-1985)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1979-1982)
• Past Member of Division IV Stars
• Past Member of Division VII Galactic System
• Past Member of Division IX Optical & Infrared Techniques
• Past Member of Division XII Union-Wide Activities
• Past Member of Commission 25 Astronomical Photometry and Polarimetry
• Past Member of Commission 33 Structure & Dynamics of the Galactic System
• Past Member of Commission 45 Stellar Classification
• Past Member of Commission 50 Protection of Existing & Potential Observatory Sites
• Past Member of Special Nominating Committee (1979-1982)