Afer van de Hulst directors were: Harry van der Laan, William Butler Burton, Harm Habing (two terms), George Miley, Tim de Zeeuw, Koen Kuijken, and J.A. Röttgering.

For interesting interviews see: http://www.aip.org/history/ohilist/transcripts.html especially Blaauw, Oort and Bok talk about Leiden