Book  (Apr 1999)  Page(s) 388.  
 
Benedictus XV Hybrid Tea. Leenders 1917. The author cites information from different sources... white, center toned salmon...

Website/Catalog  (1940)  Page(s) 68.  
 
Benedictus XV (H.T.) Fiore bianco crema, profumato. Varietà di gran pregio.

Book  (1940)  Page(s) 18.  
 
Benedictus XV Hybrid Tea. (M. Leenders, 1917)... rosy white.

Website/Catalog  (1936)  Page(s) 6.  
 
Benedictus XV Hybrid Tea (M. Leenders & Co. 1917) Description.

Book  (1936)  Page(s) 67.  
 
Benedictus XV (HT) M. Leenders 1917; Jkh. Mock X Maq. Sinety; pink-white, center shaded tender salmon-colour, very large, double, fine form, lasting, solitary, fragrance 6/10, floriferous, long stems, growth 7/10, upright.

Magazine  (Aug 1930)  Page(s) 106-107.  
 
Les meilleurs Roses à cultiver en Anjou ...Rosiers hybrides de Thés ...
Andenken and .T. Diéring. Aspirant Marcel Rouyer. Augustine Guinoisseau. Avocat. Bénédicte Séguin. Bénédictus XV. Belle Siébrecht. Caroline Testout. Charles Douglas. Columbia. Comtesse de Cassagne. Crimson Emblem. Dean Holes. Député Debussy. Duchess Of Sutherland. Earl Haig. Ecarlate. Effective. Edu Neyer. Eugène Boullet. Général Mac-Arthur. Général Superior Arnold Janssen. Georges Dickson. Gloire Lyonnaise. Georgeous. Grâce Molineux. Gruss and Teplitz. Gustave Grunewald. Hadley. His Majesty. H. E. Richardson. Hortulanus Fiet. J. B. Clark. Johanna Sebus. Joonker J. L. Mock. Kaiserin Augusta Victoria. King George V. La Champagne. Lady Ashtown. La France. La France de 89. La France Victorieuse. La Tosca. Lady Ursula. La Vendomoise. Lady Waterlow. Lieutenant Chauré. Lucien Chauré. Madame Chambard. Madame Abel Chatenay. Madame Gustave Metz. Madame Jules Bouché. Madame Jules Groslez. Madame Léon Pain. Madame Maurice Fenaille. Madame Segond Weber. Marquise de Ganay. Meha Sabatier. Mrs Arthur Robert Waddell. Mrs Edward Povell. Mrs James White. Mistress Aaron Ward. Ophelia. Paul Ledé. Prince de Bulgarie. Président Poincaré. Red Letter Day. Ricordo di Giosne Carducci. Rosiériste Philibert Boutigny. Sarah Bernarhdt. Souvenir de Claudius Denoyel. Souvenir de Madame Gauthier-Dumont. Souvenir de H.-A. Verschuren. Souvenir de F. Bohé. Souvenir de Jean Croibier. Sunburst.Yves Druhen. Thérésa.

Website/Catalog  (1923)  Page(s) 24.  
 
Hybrid Tea Roses ... Benedictus XV (M. Leenders & Co., 1917). A magnificent long-stalked cutting rose. The plant is  vigorous and floriferous. The fragrant blooms are very large, double and of a magnificent form. The colour of the expanded blooms is white, the center shaded soft salmon. Paris Certificate de Bagatelle. (Jhr. Mock X Marquise de Sinety).

Book  (1920)  Page(s) 134.  
 
Benedictus XV, H.T., (Leenders & Co., 1917.) Jonkheer J. L. Mock X Marquise de Sinety. Type, Jonkheer J. L. Mock. Bud very large, long-pointed; flower very large, full, double, borne singly on long stems; lasting; strong fragrance. Color rosy white. Foliage sparse, large, glossy green. Very vigorous, upright grower, producing an abundance of bloom.

Magazine  (Sep 1916)  Page(s) 128.  Includes photo(s).
 
Concours des Roses Nouvelles de Bagatelle 1916
Benedictus XV (Hybride thé)
Leenders et C^ie, Rosiéristes, Steil-Tegelen (Hollande)