Nick ter Wal
Groningen,
Netherlands
Julius W. Steiner
't Goy - Houten,
Netherlands
Drs. S.E. Blok
Egmond aan den Hoef,
Netherlands
Bartele Santema
EB Langweer,
Netherlands
Emile Kerssemakers
Heerlen,
Netherlands
Paul Bremmers
Maastricht,
Netherlands
J.A.P. Bosch
Haarlem,
Netherlands
Drs. A.D. Steenkamp
Leiden,
Netherlands
Roel Charbo
Amsterdam,
Netherlands
Jaap v.d. Bovenkamp
Middelburg,
Netherlands
Erik H. Ariëns Kappers
Amsterdam,
Netherlands
Laurens Heij
Leiden,
Netherlands