Book  (1958)  Page(s) 136.  
 
Golden Butterfly. HT. (Therkildsen, '20.) Old Gold seedling. Dbl., fragrant, apricot-yellow, shaded carmine.

Book  (1936)  Page(s) 118.  
 
Butterfly, Golden (HT) Therkildsen 1920; Old Gold X ? ; apricot-yellow, shaded carmine, medium size, double, lasting, solitary or up to 4, fragrance 5/10, floriferous, continuous bloom, growth 5/10, bushy, hardy.

Book  (1921)  Page(s) 159.  
 
Golden Butterfly, H.T. (Therkildsen, 1920). Seedling of Old Gold. Bud long-pointed; flower medium size, double, very lasting, borne singly or several together on long stem; apricot-yellow with carmine shading; fragrant. Foliage abundant, medium size, leathery, glossy, dark green, disease resistant....