Newsletter  (1995)  
 
Vol 4, No. 4. Summer. P18
Royal Gem. Flor. 1959. P. W. Brett

Book  (1960)  Page(s) 20.  
 
Dr. A. S. Thomas. New Rose Registrations. No. 156. Royal Gem. Floribunda. Brett. Date of Registration: August 1, 1959.