found: Second Piatigorsky cup, 1968.
found: His Van computers, politiek, Amsterdam en een klein meisje, 1983:t.p. (J. H. Donner) p. 4 of cover (Jan Hein Donner)
found: Dutch Wikipedia WWW site, May 5, 2008(under Jan Hein Donner: Johannes Hendrikus (Hein) Donner; b. July 6, 1927, The Hague; d. Nov. 27, 1988, Amsterdam; Dutch chess grandmaster)
found: LC database, May 5, 2008(hdg.: Donner, Jan H.; usage: J.H. Donner [predominant form], Jan H. Donner)
found: Information from 678 converted Dec. 16, 2014(b. 1927)