Book  (Apr 1993)  Page(s) 646.  
 
Yellow Butterfly Hybrid Tea, orange-yellow, 1927, 'Mme. Butterfly' sport; Scott, R.

Book  (1936)  Page(s) 118.  
 
Butterfly, Yellow (HT) Scott 1927; sport of M. Butterfly; orange, edges shaded yellow, medium size, double, high-centered, lasting, solitary, fragrance 4/10, habit like Butterfly.