Book  (1943)  Page(s) 263.  
 
A Glossary of Roses
Yellow Hoover (Hybrid Tea) resembles President Herbert Hoover in all respects save in its uniform pure yellow colour.
Western Rose Co. 1933. Deciduous, Vigorous Growth, Moderately Fragrant... Purpose: Bedding, Garden; Months of flowering: June-September. Hardy.

Book  (1936)  Page(s) 351.  
 
Hoover, Yellow (HT) western Rose Co. 1933; Sport of Presid. H. Hoover; pure yellow, very large, double, lasting, fragrance 5/10, floriferous, long stems, growth 7/10, upright.