Website/Catalog  (1908)  
 
Countess of Derby (A. Dickson & Sons, 1905) colour salmon centre, outer petals rose, passing to flesh veined peach, as the flower opens; habit of growth is erect, vigorous and free branching; the flowers are large, very full, and perfection in shape.

Website/Catalog  (1907)  Page(s) 2.  
 
Countess of Derby HT. Very like Catherine Mermet, but better bloomer and grower. Centre salmon, outer petals rose, passing to peach is the flower expands; vigorous and free flowering; good.

Book  (1907)  Page(s) 69.  
 
A good robust growing exhibitor's rose

Book  (1906)  Page(s) 171.  
 
Roses annoncées pendant l'impression
10.978. Countess of Derby, Hybride de Thé, Dickson 1906 rose pâle jaunâtre