Book  (1936)  Page(s) 321.  
 
Gudrun (HT) Jacobs 1898; L. Napier X Perle des Jardins; silvery light pink, center bright pink, large, double, globular, high-centered, floriferous, repeats, long stems, growth 6/10, bushy

Book  (1906)  Page(s) 70.  
 
4.564. Gudrun, Hybride de Thé, Jacobs 1897 rose argenté

Book  (1899)  Page(s) 76.  
 
Gudrum, HT, Jacobs, 1897, rose argentée