Jaap Valkhoff died in 1992.
Jaap Valkhoff was born in 1910.
Jaap Bakema died in 1981.
Jaap Kunst died in 1960.
Jaap Spaanderman died in 1985.
Jaap Burger died in 1986.
Jaap Kraaier died in 2004.
Jaap Bulder died in 1979.
Jaap Boot died in 1986.
Jaap Boersma died in 2012.
Jaap Blokker died in 2011.
Jaap Hoogstra died on June 27, 1998.
Jaap Mol died on 1972-12-09.