Jaap Burger was born in 1904.
Jaap Valkhoff died in 1992.
Jaap Boot died in 1986.
Jaap Boersma died in 2012.
Jaap Bakema died in 1981.
Jaap Spaanderman died in 1985.
Jaap Blokker died in 2011.
Jaap Kunst died in 1960.
Jaap Bulder died in 1979.
Jaap Kraaier died in 2004.
Jaap Mol died on 1972-12-09.
Jaap Barendregt died on 1952-02-16.