Book  (Apr 1993)  Page(s) 652.  
 
Zulu Queen Hybrid Tea, dark maroon, 1939, ('Cathrine Kordes' x 'E.G. Hill') x 'Fritz Hoger'; Kordes. Description.

Book  (1990)  Page(s) 87.  Includes photo(s).
 
Zulu Queen Hybrid Tea. Kordes 1939... Parentage: 'Catherine Kordes' x 'E.G. Hill'... double, deep wine-red blooms...

Book  (1947)  Page(s) 261.  
 
Zulu Queen (H.T.) has large, double, pointed flowers of deep crimson-maroon, borne upon vigorous, erect and branching plants with deep green foliage. Kordes 1939....June-September.

Book  (1943)  Page(s) 263.  
 
A Glossary of Roses
Zulu Queen (Hybrid Tea) has large double pointed flowers of deep crimson-maroon, borne upon vigorous, erect and branching plants with deep green foliage.
Kordes 1939. Deciduous, Vigorous Growth... Purpose: Bedding, Garden; Months of flowering: June-September.