Book  (Apr 1993)  Page(s) 558.  
 
Snowbird, Climbing Climbing Hybrid Tea, white, 1949, Weeks.

Book  (1993)  Page(s) 118.  Includes photo(s).
 
A climbing Hybrid Tea. Weeks (USA) 1949. Height: 10 ft. Scented.

Book  (Jun 1992)  Page(s) 223.  
 
Snowird, Cl. Weeks, 1949. Hybrid Tea. Sport of 'Snowbird'. [Author cites information from different sources.]