Book  (1971)  Page(s) 114.  
 
One or two other roses sometimes listed as ramblers may be mentioned here. The first is Elmshorn, whose pink flowers are somewhat reminiscent of 'Dorothy Perkins', whence for a short time it was known as Perpetual Dorothy. It came from a cross between the so-called Hybrid Musk 'Hamburg' (which actually had no claim even to that wholly inaccurate class name), crossed with a polyantha 'Verdun'. It is a vigorous, remontant shrub, which can be persuaded to climb, with patience, but has no real resemblance to the typical rambler roses.

Magazine  (Nov 1965)  Page(s) 4. trimester, p. 14.  
 
Le Concours de La Haye 1965....Sur 75 variétés qui furent plantées en 1963, le jury a proclamé le 14 septembre 1965, le palmarès suivant :
C) Certificat « Roses des Parcs 1965 »
— ELMSHORN, rose foncé Obt : W. KORDES et SOHNE (Allemagne)
— LUCKY, rouge velouté : Obt. J.C.P. LEENDERS (Pays-Bas) ;
— PRESTIGE, carmin tendre : Obt. W. KORDES et SOHNE (Allemagne).

Book  (1958)  Page(s) 101.  
 
Elmshorn. HMsk. (Kordes; int. Morse, '51.) Hamburg X Verdun. Small (1 in.), dbl. (20 petals), cupped, pompon type, slightly fragrant, deep pink; large truss to 40. Fol. glossy, wrinkled, light green. Will climb to 10 ft. if supported; free, recurrent bloom.

Article (misc)  (1954)  Page(s) 48.  
 
Elmshorn 21 chromosomes.

Website/Catalog  (1953)  Page(s) 9.  
 
Novelty Roses 1952.  Elmshorn (Hyb. Musk. Kordes 1951) Small double cerise pink shapely blooms in clusters. Tall shrubby growth. 8/6 each.
 

Magazine  (Sep 1951)  Page(s) 3. trimester, p. 92.  
 
Registration Internationale des Roses Nouvelles en 1950 Sous le contrôle de la National Rose Society, de l'American Rose Society et de la Société Française des Roses ...
Reg. No. 190; Elmshorn; Enregistrées par W. Kordes; Obtenues par W. Kordes