Past affiliation(s) within the IAU

• Past President of Commission 38 Exchange of Astronomers (1973-1976)
• Past Vice-President of Commission 38 Exchange of Astronomers (1970-1973)
• Past Organizing Committee Member of Commission 38 Exchange of Astronomers (1982-1985)
• Past Organizing Committee Member of Commission 38 Exchange of Astronomers (1979-1982)
• Past Organizing Committee Member of Commission 38 Exchange of Astronomers (1976-1979)
• Past Organizing Committee Member of Commission 38 Exchange of Astronomers (1967-1970)
• Past Member of Division C Education, Outreach and Heritage
• Past Member of Division XII Union-Wide Activities (until 2012)
• Past Member of Commission 38 Exchange of Astronomers
• Past Member of Commission 46 Astronomy Education & Development (until 2014)