Article (website)  (1998)  Page(s) 3.  
 
Following this he [Tanaka Shinzaemon] started to issue new varieties towards the end of the Meiji era, and until his death in 1936 he had bred hundreds of peonies, which brought him the nickname "Old Man of Peonies". Representative sorts are 'Godaizu', 'Tamadare', 'Hira no Yuki', 'Hõgoshi' and 'Tsukumushishi', which are still cultivated nowadays.

Website/Catalog  (1956)  Page(s) [1].  
 
Japanese Tree Peonies
Hira no Yuki (Snow of Hira) Sulphur tinted white semi-double...$6.00

Article (magazine)  (Jan 1955)  Page(s) 57.  
 
Alphabetical Check List of Tree Peony Names In  Public Collections And/or Available in Nurseries 1954-1955
Japanese, White, 'Hira-no-yuki' (Snow of Hira) (Jap. bef. 1934), [Gardens] University of Washington Arboretum, [Nurseries] William Gratwick

Website/Catalog  (1945)  Page(s) [3].  
 
Rare Plants Tree Peonies
Ready for Your Garden Now.
White
Mountain of Sun-lit Snow (Hira-no-yuki).

Website/Catalog  (1940)  Page(s) 13.  
 
New & Rare Varieties...
Hira-no-yuki, Sulphur yellow tinged white deeper at base, double large rare flower ... Each $ 1.20