Country of origin:
Gerrit de Hoop, Douwe Buiter, Henny de Munnik, Peter Dijkstra (Henk Bemboom), Joop Ekelhoff and Johan Lutke. Later also Koos Bloemsma and his brother Jan
Gerrit de Hoop, Douwe Buiter, Henny de Munnik, Peter Dijkstra (Henk Bemboom), Joop Ekelhoff and Johan Lutke. Later also Koos Bloemsma and his brother Jan