Book  (1936)  Page(s) 582.  
 
Preussen (HT) Loebner 1920; Farbenkönigin X Richmond; dark blood-red, very large, well double, fine form, lasting, solitary or up to 4, fragrance 7/10, floriferous, continuous bloom, long strong upright stems, growth 6/10, upright. Sangerhausen

Website/Catalog  (1933)  Page(s) 88.  
 
Preussen (Hybrid Tea). Very noteworthy rose. The blooms are large to very large, globular. The outer petals somewhat reflexed. The colour is bright amaranth-purple (9 ra)..... Low garden plants 1 piece RM [Reichsmark] -.50

Website/Catalog  (1929)  Page(s) 122.  
 
Preussen (Hybrid Tea). Very noteworthy rose. The blooms are large to very large, globular. The outer petals somewhat reflexed. The colour is pure blood-red with fiery reflexes, not blueing. Low garden plants 1 piece RM [Reichsmark] 1.25

Website/Catalog  (1925)  Page(s) 81.  
 
Best rose novelties of the last years...
Preussen (Hybrid Tea 1920). Large, double, high-centered. Pure dark red, faithfully blooming. Low-grafted garden plants 1 piece G.-M. [Gold-Mark] 1.25