Website/Catalog  (1970)  Page(s) 68.  
 
location 28, Königin Wilhelmine (Koster 1925) Pol.

Book  (1936)  Page(s) 758.  
 
Wilhelmine, Königin (polyantha) Koster 1925; sport of Orléans Rose; carmine-pink, medium size, double, flat, in clusters of 10-60, floriferous, continuous bloom, growth 6/10, upright, bushy. Sangerhausen

Book  (1935)  Page(s) 27.  
 
J. De Vink, Boskoop, Holland.  Orleans Rose.
.....Some most peculiar facts have struck me while observing the development of this Orleans group.
One remarkable thing was the regularity with which the different colours appeared, and always at different places at the same time. After the appearance of a white sport, White Orleans, fine for cutting under glass, and Koningin Wilhelmina, Neyron Rose, the successive sports got darker and darker red, namely, Koster's Orleans, Miss Edith Cavell, Ideal, Kersbergen (to mention only a few).