Book  (2007)  
 
Thunderbird 'Thunderbird' F, mr, Paul Fl. de Vor. Includes description.

Book  (1958)  Page(s) 405.  
 
Thunderbird. F. (P. DeVor, int. Amling Roses, '58.) Skylark sport. Bud urn shaoped; fl. medium size (2 1/2 in.), dbl. (40-55 petals), high-centered, rose-red; cluser of 3-8. Vig., spreading; profuse bloom. (28) Pl. Pat. 1677.