Book  (2005)  Page(s) 100.  
 
location D:71, Königin Emma, Verschuren 1903, HT, whitish pink, large, double, medium height

Book  (Apr 1999)  Page(s) 414.  
 
Koningin Emma Translation: "Queen Emma". Hybrid Tea. Verschuren 1903. Parentage: 'Kaiserin Auguste Viktoria' x an unnamed seedling. The author cites information from different sources... Fleshy white, with rosy centre...

Book  (1936)  Page(s) 507.  
 
v. Nederland, Koningin (HT) Verschuren 1903; K. Aug. Viktoria X ? seedling; white with light pink and occasionally light coppery salmon, large, well double, fine form, solitary, floriferous, growth 6/10. Sangerhausen

Book  (1922)  Page(s) 396.  
 
A Descriptive List of Roses in Commerce.
Koningin Emma (Hybrid Tea), H. A. Verschuren & Zonen 1904: Flower fleshy white, with rosy centre, very large, full. Growth robust, floriferous. Exhibition.

Magazine  (1 Jul 1911)  Page(s) 314.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Kœnigin Emma... Hybrid Tea, Verschuren, 1904, Seedling Kaiserin Augusta Victoria

Magazine  (Nov 1903)  Page(s) 163.  
 
Rosiers Nouveaux de 1903 ....
M. H.-A. Verschuren, rosiériste, à Haps (Hollande), nous annonce les nouveautés suivantes :...
Koningin Emma (Kaiserin x un semis qui n’est pas en vente.) Feuillage comme Kaiserin, bouton très long et de très belle forme. La fleur est très grande, très pleine, blanche avec un peu de rose, les pétales très épais. Une très belle variété !

Magazine  (1903)  Page(s) 85.  
 
Breeder: H. A. Verschuren....Koningin Emma. (Kaiserin X Seedling, not in commerce.) The foliage is darker than that of Kaiserin [Auguste Victoria], the bud long and of very beautiful form. The bloom is large and very double, white with some pink,...