Book  (1991)  Page(s) 364.  
 
Bonn Hybrid Musk. Kordes 1950... orange red...

Website/Catalog  (1985)  Page(s) 13.  
 
Bonn (Hybrid Musk) Large, double, fragrant orange-scarlet flowers produced in trusses.   Upright and bushy. 1950.  P. (C) 5 x 3’. 

Website/Catalog  (1975)  Page(s) 18.  
 
BONN (Kordès Sohne 1950). Fleur rouge vermillon minium, très remontant. Arbuste de 1 m. 50 de hauteur. 

Website/Catalog  (1973)  Page(s) 25.  
 
Rosiers arbustes ... Boon. Semi-double, rouge-orange

Book  (1962)  
 
p53.  David Ruston.  Shrub Roses, Old and New
My interest in shrub roses was aroused some five or six years ago.  I had procured Herr Kordes' hybrid varieties Berlin, Bonn and Grandmaster and planted them along an irrigation channel where they thrived, and the flowering was so spectacular that I decided to try more varieties.  

p61 ibid.  Bonn, a tall semi-double orange cinnabar, is well worth while. 

Book  (1958)  Page(s) 37.  
 
Bonn. HMsk. (Kordes, '50.) Hamburg X Independence. Large (4 in.), dbl. (25 petals), fragrant (musk), orange-scarlet; truss of 10. Fol. glossy. Upright, bushy (4-5 ft.)

Article (misc)  (1954)  Page(s) 49.  
 
Bonn 28 chromosomes.

Website/Catalog  (1953)  Page(s) 8.  
 
Novelty Roses 1952. Bonn (Per. Moschata. Kordes 1950) Brilliant orange scarlet single to semi-double blooms on semi-climbing growth. 10/6 each.

Book  (1952)  Page(s) 19.  
 
Harry H. Hazlewood.  The New Roses of 1952. Species Hybrids.​ Bonn (Perpetual Moschata) (Kordes, 1950). Orange scarlet single to semi-double blooms in large clusters. This is a strikingly brilliant colour. Semi-climbing growth. (‘Hamburg’ x ‘Kordes' Sondermeldung’.)

Article (magazine)  (Dec 1951)  Page(s) 271.  
 
Bonn Hybrid Musk. (Wilhelm Kordes 1950). Description... orange scarlet...