Book  (1958)  Page(s) 181.  
 
Karl Herbst. HT. (Kordes, '50.) Independence X Peace. Large, well shaped, very fragrant, dull dark scarlet. Vig.; free bloom. (28) NRS Gold Medal, 50.

Magazine  (Sep 1957)  Page(s) 3. trimester, p. 10.  Includes photo(s).
 
Karl Herbst
[photo repeated 1. and 3. trimester 1959]

Website/Catalog  (1955)  Page(s) 7.  
 
KARL HERBST (Kordes 1950). .....Fleur très grande rouge carmin teinté d'écarlate.

[no longer listed in 1960]

Book  (1953)  
 
p131.  Frank Mason, Feilding N.Z.  Some Newer Roses. 
Karl Herbst is red with a dull sheen over it. 

p138.  Miss Pat Mason, Auckland N.Z. 
Karl Herbst will find many friends with its well-formed exhibition blooms of scarlet with crimson reverse; the colour may be considered a little dull in comparison with many of our modern red roses, but the quality is superb.  The foliage is highly resistant to disease. Moderate fragrance was noted.
 

Book  (1952)  
 
p55.  Dr. A. S. Thomas.  Red Roses.
When I first saw Mme. A. Meilland I remarked that it was a yellow and pink replica of Wiliam Orr. Last Winter I planted Karl Herbst, hailed as a "red Mme. A. Meilland" - almost the reverse of my statement regarding William Orr.  So far, this seems good "sales talk" for while Karl Herbst is a first class exhibition rose, it must lose points as a garden or decorative variety because its colour is a pale and rather dull shade, and it burns badly in hot dry weather. 

p142.  Dr. A. S. Thomas.  A Victorian View of the New Roses. 
Karl Herbst: The big, well-formed, show blooms are of the slightly blunted type. By present-day standards, the colour of this red rose is a little dull. Good growth and free blooming. We will probably see it on the show bench frequently, but I would prefer quite a few others as garden roses.

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. 146; Karl Herbst; Enregistrées par Wheatcroft Bros., Ltd.; Obtenues par W. Kordes

Book  (1951)  Page(s) 11.  
 
Harry H. Hazlewood.  The New Roses of 1951.  The outstanding variety for 1951 is Karl Herbst (Kordes, 1950). This is a fully double exhibition type with large scarlet red blooms of superb shape with a slightly lighter shade on reverse of petal. It has been described overseas as a Red 'Mme. A. Meilland' (Peace) but some might suggest this is sales propaganda. Its quality however may be estimated by the fact that it won the N.R.S. Gold Medal in London recently. Unfortunately it has very little fragrance.

Magazine  (Oct 1950)  Page(s) 4. trimester, p. 122.  
 
Registration Internationale des Noms de Roses .... KARL HERBST. HT. Kordes, Wheatcroft Bros. Ltd.