Past affiliation(s) within the IAU

• Past General Secretary of Executive Committee (1988-1991)
• Past Assistant General Secretary of Executive Committee (1985-1988)
• Past Advisor of Executive Committee (1991-1994)
• Past President of Commission 46 Astronomy Education & Development (1973-1976)
• Past Vice-President of Commission 46 Astronomy Education & Development (1970-1973)
• Past Chair of Resolutions Committee (1997-2000)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (2000-2003)
• Past Organizing Committee Member of Commission 46 Astronomy Education & Development (1997-2000)
• Past Organizing Committee Member of Commission 50 Protection of Existing & Potential Observatory Sites (1997-2000)
• Past Organizing Committee Member of Commission 46 Astronomy Education & Development (1994-1997)
• 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 46 Astronomy Education & Development (1982-1985)
• Past Organizing Committee Member of Commission 46 Astronomy Education & Development (1976-1979)
• Past Member of Division B Facilities, Technologies and Data Science (until 2020)
• Past Member of Division C Education, Outreach and Heritage (until 2020)
• Past Member of Division H Interstellar Matter and Local Universe (until 2020)
• Past Member of Inter-Division B-C Commission Protection of Existing and Potential Observatory Sites (2015-2020)
• Past Member of Commission C1 Astronomy Education and Development (2015-2020)
• Past Member of Commission H2 Astrochemistry (2015-2020)
• Past Member of Commission 5 Documentation & Astronomical Data (until 2015)
• Past Member of Commission 34 Interstellar Matter (until 2015)
• Past Member of Commission 46 Astronomy Education & Development (until 2015)
• Past Member of Commission 50 Protection of Existing & Potential Observatory Sites (until 2015)
• Past Member of Division VI Interstellar Matter (until 2012)
• Past Member of Division XII Union-Wide Activities (until 2012)
• Past Member of Finance Committee (2000-2003)
• Past Member of Finance Committee (1988-1991)