Book  (2016)  Page(s) 174.  
 
Mme Portier Durel ....This rose is said to have a fragrance of Lily of the Valley.   Small, double, white well-formed flowers, sometimes with a button eye, are carried in long, well spaced clusters.  The expected growth is about 10 feet (3 meters). The plant is fully hardy. 

Book  (2007)  Page(s) 444.  
 
Mme. Portier-Durel (P. Guillot, 1909). W. Pure snow white.
Mme. Portier-Durel (Portier-Durel, 1910). W. Pure snow white.

Book  (2003)  Page(s) 153.  
 
1909. Madame Portier-Durel (W), obtention Portier-Durel; commercialisation Guillot

Magazine  (Dec 1936)  Page(s) 136.  
 
Madame Portier Durel. Gracieuse avec des fleurs extrêmement petites blanc crème, en bouquets nombreux.

Book  (1936)  Page(s) 57.  
 
Portier-Durel, Mme. (HW), Portier-Durel 1910; cream-white, small, well double, fine form, imbricated, large & long clusters,fragrance 6/10 (lily of the valley), floriferous, foliage shaded purple, growth 8/10, climbing habit, 3m, hardy

Book  (1933)  Page(s) 200.  
 
Mme. Portier-Durel Portier-Durel, 1910. Wichuraiana with large clusters of small, double, white flowers.

Magazine  (Jun 1929)  Page(s) 67.  
 
M^me Portier-Durel (Portier-Durel, 1909), fleur petite, pleine, â odeur de muguet, blanc de neige.

Book  (1927)  Page(s) 228.  
 
Some of the Best Wichurianas.
Madame Portier Snow-white and good.

Magazine  (Jul 1922)  Page(s) 341.  
 
Rosiers hybrides de Wichuraïana. Très grande vigueur...
Mme Portier Durel, blanc de neige.

Website/Catalog  (1922)  Page(s) 41.  
 
Wichuraiana Class. (5). Mme. Portier Durel (Portier Durel). Habit 6. Snow white double blooms; small imbricated form; borne in large clusters.