A

Ada Mansuino
Alfred James Fraser

B

Banner
Bentall
Boll
Bowie
Burbank

C

C. Richardier
Charles Mallerin

D

David L. Armstrong
De Ruiter Innovations BV
Dr. Walter E. Lammerts

E

E.W. Schwartz
Ernest Tschanz
Eugene S. Boerner

F

F.J. Grootendorst
Francesco Giacomo Paolino
Francis Meilland

G

G. Delbard
Geschwind Rudolf
Grootendorst
Gysbert Verbeek

H

Herbert C. Swim
Hetzel

I

Ignace Hendrickx

J

Jacques Mouchotte
Jan Böhm
Jean-Marie Gaujard
Jerry F. Twomey

L

L. Pernille Olesen
Lambert
LeGrice
Les Stratford
Louis Lens

M

M. H. Horvath
Magyar Gyula
Margottin
Márk Gergely
Mathias Tantau
Meilland
Michele Malandrone
Mogens N. Olesen
Moreau-Robert
Murell

N

Nieborg
Nola M. Simpson

O

O.L. Ollie Weeks

P

P. Stephen
Palocsay Rudolf
Poulsen Roser A/S

R

Reimer Kordes

S

Sam McGredy
Schaum & Van Tol
Schmidt
Seizo Suzuki
Shepherd
Somerset Nursery
Sunningdale Nurseries
Svend Poulsen
Swim & Weeks

T

Tanne
Tantau
Turbat

U

Uhl

W

W. Kordes' Söhne
William J. Radler
William Paul