Book  (May 1992)  Page(s) 319.  
 
Snowdrift Walsh (USA) 1913. Small, pure white, fully double flowers...

Book  (1988)  Page(s) 89.  Includes photo(s).
 
A rambler raised by Walsh in 1913. Description.

Book  (1943)  Page(s) 22-24.  
 
The Walsh Ramblers R. MARION HATTON Secretary, American Rose Society. Snowdrift. (1913) R. Wichuraiana x R. multiflora form. Double. Pure white.

Book  (1936)  Page(s) 670.  
 
Snowdrift (hybrid wichurana) Walsh ca. 1900; white

Book  (1933)  Page(s) 215.  
 
Snowdrift  M. H. Walsh, 1913. Forgotten white-flowered Wichuraiana of no special merit.

Book  (1911)  Page(s) 69.  
 
The Wichuraiana Hybrids.
The following list includes most of the best Wichuraiana Roses to date (1910):
Snowdrift. — A good white, very vigorous in growth.