Book  (Sep 1993)  Page(s) 193.  Includes photo(s).
 
Gertrud Schweitzer Large-flowered. Kordes. Parentage: 'Königin der Rosen' x unnamed seedling. Description... a rare apricot-orange tint...

Book  (Apr 1993)  Page(s) 206.  
 
Gertrud Schweitzer Hybrid Tea, apricot-orange, 1973, 'Colour Wonder' x Seedling; Kordes. Description.

Book  (1974)  Page(s) 19.  
 
E. F. Allen.  Awards To New Rose Seedlings In Great Britain In 1973
Gertrud Schweitzer. A hybrid tea, by Kordes, with lovely, scented flowers of an orange-salmon and vermilion blend. The tight buds are a deep coppery pink. Trial Ground Certificate.