Book  (1936)  
 
Siebert, Palmengarten-Direktor (HT) Welter & Hinner 1898; K. Aug. Viktoria x W.F.Bennett x Ctsse. de Frigneuse; silvery light pink, base yellowish white, edges yellowish pink, large, well double, fine form, singular, floriferous, long stems, growth 7/10. Sangerhausen

Magazine  (29 Jul 1911)  Page(s) 362.  
 
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...
Palmengart Direktor Siebert... Hybrid Tea, Welter, 1898, Kaiserin Augusta Victoria X W. F. Bennett X Comtesse de Frigneuse

Book  (1899)  Page(s) 183.  
 
Palmengarten Dir. Siebert, HT, Welter, 1899, rose tendre fonds jaune