Website/Catalog  (1929)  Page(s) 15.  
 
Descriptive List 
Birket Foster (Kelway 1909)—Full double bright crimson-scarlet.

Website/Catalog  (1923)  Page(s) 16.  
 
Descriptive List
Birket Foster (Kelway 1909)—Full, double, bright crimson-scarlet.

Website/Catalog  (1918)  Page(s) 45.  
 
Paeonia Sinensis (Pioenroos).
dubbelbloemige soorten.
Birket Foster, dubbel rood... [double, red]