Book  (1936)  Page(s) 64.  
 
Belgique, Princess Stéphanie de (HT) Soup. & Nott. 1929; G. McArthur X ? ; carmine, center darker with bright reflexes, large, well double, globular, lasting, solitary, fragrance 7/10, floriferous, continuous bloom, growth 6/10.

Magazine  (1931)  Page(s) 311.  
 
Princesse Stephanie HT (Soupert & Notting 1929). General Mac Arthur X unknown...