Magazine  (19 Nov 1981)  
 
Humphrey Brooke: A Rose Prophecy Fulfilled, The Resurgence of the Hybrid Perpetual.
Even more fortunately the HP was my wife's and my special selection—the shapely, pure white and scented 'Baron Adolphe de Rothschild' (1867) (the name has been disputed)—is one of the Sangerhausen HPs to have thrived with us,

[ It is presumed this rose was in fact, 'White Baroness']

Book  (1936)  Page(s) 53.  
 
Baroness, White (HP) G. Paul 1888; sport of Bar. A. de Rothschild; pure white to white-pink, large, double, fine form, growth 7/10, 1 m. = [similar to] Mab. Morrison. Sangerhausen

Book  (1935)  Page(s) 182.  
 
White Baroness
Hybrid Perpetual
[said to be a sport of 'Baroness Rothschild']... white...

Magazine  (Dec 1914)  Page(s) 462.  
 
Merveille de Lyon, Mabel Morisson, White Baroness (albinos de la célèbre variété Baronne de Rothschild, gain de Pemet père).

Book  (1910)  Page(s) 295.  
 
White Baroness Hybrid Perpetual... a white sport from Baroness Rothschild, flowers large and full.

Book  (1906)  Page(s) 106.  
 
10.840. White Baroness, Hybride Remontant, G. Paul 1888 blanc

Book  (1906)  Page(s) 17.  
 
1.076.  Baronne de Rothschild à fleurs blancs,  Hybride Remontant,  voir White Baroness

Book  (1902)  Page(s) 136.  
 
Hybrides Remontants. Groupe K. — Baronne A. de Rothschild
Rameaux très forts, trapus, à aiguillons gros, crochus, rapprochés, et à mérithalles très courts: feuillage
ample; fleur solitaire, coloris rose frais ou rose clair, sauf quelques accidents fixés de coloris blanc et blanc rosé; fleur sans odeur.
4559* White Baroness... (G. Paul 1888)... blanc.

*This number was used twice

Book  (1895)  Page(s) 111.  
 
White Baroness, pure white

Website/Catalog  (1894)  Page(s) 181.  
 
Hybrid Perpetual Roses
White Baroness  A pure white sport from Baroness Rothschild; flowers large and full; distinct; one of the best.