Past affiliation(s) within the IAU

• Past Chair of Resolutions Committee (1991-1994)
• Past Organizing Committee Member of Commission 28 Galaxies (1976-1979)
• Past Organizing Committee Member of Commission 28 Galaxies (1973-1976)
• Past Organizing Committee Member of Commission 34 Interstellar Matter (1967-1970)
• Past Organizing Committee Member of Commission 40 Radio Astronomy (1970-1973)
• Past Member of Division B Facilities, Technologies and Data Science (until 2015)
• Past Member of Division C Education, Outreach and Heritage (until 2015)
• Past Member of Division VI Interstellar Matter (until 2012)
• Past Member of Division VII Galactic System (until 2012)
• Past Member of Division VIII Galaxies & the Universe (until 2012)
• Past Member of Division H Interstellar Matter and Local Universe (until 2015)
• Past Member of Division J Galaxies and Cosmology (until 2015)
• Past Member of Division X Radio Astronomy (until 2012)
• Past Member of Commission B4 Radio Astronomy (2015-2015)
• Past Member of Commission C3 History of Astronomy (2015-2015)
• Past Member of Commission 28 Galaxies (until 2015)
• Past Member of Commission H1 The Local Universe (2015-2015)
• Past Member of Commission 33 Structure & Dynamics of the Galactic System (until 2015)
• Past Member of Commission 34 Interstellar Matter (until 2015)
• Past Member of Commission 40 Radio Astronomy (until 2015)
• Past Member of Commission 41 History of Astronomy (2003-2015)
• Past Member of Inter-Commission B4-C3 WG Historical Radio Astronomy (2015-2015)
• Past Member of Commission 40 WG Historic Radio Astronomy (until 2015)
• Past Member of Inter-Division X-XII WG Historic Radio Astronomy