Book  (2007)  Page(s) 155.  
 
Countess of Rosebery (Postans / W. Paul, 1879). HP. Syn. 'Countess of Roseberry'. Sdlg 'Victor Verdier' (HP). Varying carmine pink.

Book  (Jun 1992)  Page(s) 159, 162, 193.  
 
Page 159: Countess of Rosebury Hybrid Perpetual. Postans/W. Paul 1879. Seedling of 'Victor Verdier' (Hybrid Perpertual)... Fine carmine red... color, carmine, bright pink...
Page 162: Countess of Rosebery, Hybrid Perpetual, parent of 'Duchess of Fife'.
Page 193: Countess of Rosebery introduced between 1874 and 1902

Book  (1936)  Page(s) 622.  
 
of Roseberry, Countess (HP) Postans 1879; V. Verdier X ? ; bright carmine-pink, large, double, cup form, fragrance 5/10, smotth branches, growth 7/10.

Website/Catalog  (1913)  Page(s) 14.  
 
Hybrid Perpetual Roses.
Countess of Roseberry
The feathery surface of the petals of the Countess of Roseberry, shading from rose-color to darker, presents a different color when seen from different angles. The plant blossoms freely twice a year, and bears its flowers upon thick, short, sturdy canes that come with a vigorous growth. The flowers are fragrant, large and full-cupped. A very serviceable Rose of distinct personality. It makes friends upon slight acquaintance, and holds them by reason of its merits.

Book  (1910)  Page(s) 282.  
 
Countess of Rosebery Hybrid Perpetual; flowers brilliant carmine-rose, large and full, of finely cupped form; foliage handsome, wood smooth, habit good; three First-class Certificates. One of the best.

Booklet  (1904)  Page(s) 20.  
 
Countess of Rosebery (Postans 1879) reddish-salmon rose color, large, full, and good form; distinct and good.  Vig. Exh. Gdn. 

Book  (1902)  Page(s) 132.  
 
Hybrides Remontants. Groupe I. — Madame Victor Verdier
Ce groupe se rapproche beaucoup de celui des "Charles Lefebvre"; on dit communément des rosiers qui le composent que ce sont des "Général Jacqueminot" à bois lisse: ils sont très florifères, franchement remontants. Rameaux lisses, verts, aiguillons petits et rares; feuillage vert, moyen; fleur en coupe, floraison le plus souvent en corymbe; on y rencontre les coloris les plus variés, du rose au rouge pourpre noirâtre.
4385. Countess of Rosebery... (Postans 1879)... carmin.

Booklet  (1899)  Page(s) 19.  
 
Hybrid Perpetuals.
Countess of Rosebery Postans 1879. S. G.  Cherry, carmine-rose, cupped, vigorous. 

Book  (1899)  Page(s) 44.  
 
Countess of Rosebery, HR, Postans, 1879, carmin

Website/Catalog  (1894)  Page(s) 174.  
 
Hybrid Perpetual Roses.
Countess of Rosebery  .....wood smooth, habit good,  a vigorous growing variety with a strong and hardy constitution.