Hengstenboek (KWPN) - Supplement October 2005, Fokfamilies - Foundation Families Loose leaf pages, Dutch language. Supplement pages for the Hengstenboek-Active Stallions volumes or the Hengstenboek System (see category: Dutch Warmbloods) to keep your volumes up-to-date. This supplement, first published in 2004, gives breeding family number, foundation mare of that family, the approved stallions, notable sport horses and prestatiemerries within the family, each with registration number and sire x dam's sire. Completely updated.