Book  (1918)  Page(s) 62.  
 
H. R. Darlington. A Study of Form in the Rose: …… Souvenir de S. A. Prince of the same year (1889), a white sport from Souvenir d’un Ami, when well grown is a good type of the cupped class of tea roses.

Book  (1913)  Page(s) 148.  
 
Dates of flowering of roses in 1912 at The Cottage, Neasden, N.W. UK.
June 12. Mme. Lambard, Princesse de Sagan, Mme. Abel Chatenay
June 14. Souvenir de S. A. Prince.
June 17. Mrs. John Laing, Hugh Dickson

Book  (1913)  Page(s) 97.  
 
Tea Roses
Souvenir de S. A. Prince. -- An attractive Tea rose, with pure white, shapely blooms. It is of satisfactory growth, and to be recommended for garden and show. It is a white "sport" from Souvenir d'un Ami, a variety of silvery-rose colour that is equally satisfactory.

Book  (1912)  Page(s) 66.  
 
Race des Thé non sarmenteux. Groupe B.- Comtesse de Labarthe...
Souvenir de S. A. Prince, Accident fixé de 'Souvenir d'un Ami. Syn.: The Queen. Ressemble à 'Souvenir de Franz Deak'. Prince 1889. Blanc légèrement rosé.- fl. grande, pleine, en coupe, odorante; florifère, vigoureux. Pour la forçage moyen (février-mars). Pour couper les fleurs.

Magazine  (12 Aug 1911)  Page(s) 386.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Souvenir de Sarah A. Prince... Tea, Prince, 1889, Sport Souv. d'un Ami

Website/Catalog  (1911)  Page(s) 18.  
 
Tea-Scented Roses. The Queen Pure white sport from 'Souv. d'Un Ami'; free bloomer. Mod.

Magazine  (10 Sep 1910)  Page(s) 208.  
 
Colour Variation in Rose Souvenir d’un Ami:
C. P., Nagpur
Almost all Rose sports have a tendency to revert. Souvenir de S. A. Prince sported from Souvenir d’un Ami simultaneously in more than one place, and it is not infrequent to find various shades of pink upon this sport.

Book  (1910)  Page(s) 193, 323.  
 
Page 193: Souvenir de S.A. Prince introduced between 1874 and 1902
Page 323: Souvenir de S.A. Prince; see 'The Queen'.
Page 323: The Queen Tea; a pure white sport from 'Souvenir d'un Ami'; of American origin. A very valuable white Rose; hardy and free.

Magazine  (30 Oct 1909)  Page(s) 529.  
 
Souvenir de S. A. Prince, T., Prince.

Website/Catalog  (1909)  Page(s) 8.  
 
General List of Ever-Blooming Roses
The Queen
The Pure White Tea Rose.
The most charming Tea Rose.  The offspring of that fine old Rose Souvenir d'un Ami, whose many good qualities it seems to possess in a remarkable degree.  It is pure snow-white, makes good, finely formed buds, is quite full, showing the center but slightly when fully open.