Website/Catalog  (1938)  Page(s) 16.  
 
Bush Roses
Diana (Single)... Deep orange, suffused carmine. Lovely in bud. Most effective. Polyantha type. Almost void of perfume. Introduced 1921.

Book  (1936)  Page(s) 208.  
 
Diana (polyantha) Spek 1922 (Leenders); deep orange to salmon-pink, edges carmine, single, large clusters, floriferous, good foliage, growth 6/10. Sangerhausen