Book  (Apr 1993)  Page(s) 639.  
 
White Swan Hybrid Tea, pure white, 1951, 'Kaiserin Auguste Viktoria' seedling x White seedling; Verschuren-Pechtold. Description.

Website/Catalog  (1960)  Page(s) 16.  
 
WHITE SWAN (Verschuren Petchold 1951). Blanc pur. + [conseillées pour fleurs coupées de plein air].

Book  (1958)  Page(s) 426.  
 
White Swan. HT. (Verschuren-Pechtold, int. J&P, '51.) Kaiserin Auguste Viktoria seedling x white seedling. Bud ovoid; fl. large, (4 1/2-5 in.), dbl. (30 petals), high centered, fragrant, pure white. Fol. glossy, dark. Very vig., upright. (28) Pl. Pat. 1115.

Website/Catalog  (1955)  Page(s) 8.  
 
WHITE SWAN (Verschuren Pechthold 1951). .....Fleur blanc pur résistant à la pluie, remarquable pour fleurs coupées.

Book  (1953)  Page(s) 132.  
 
Frank Mason, Feilding N.Z.  Some Newer Roses.
I have seen a bloom of White Swan which has rather more petals than Virgo...

Book  (1952)  Page(s) 264.  
 
White Swan Hybrid Tea. (H. Verschuren; introduced by Jackson & Perkins Co. 1952). 'Maria Verschuren' x white seedling... white blooms... Glossy foliage...