Book  (Jan 1917)  Page(s) 47-48.  
 
In 1885, a First Class Certificate of the Royal Horticultural Society was granted to a peony named Snowflake—the first peony to receive this honour.

Website/Catalog  (1912)  Page(s) 11.  
 
Kelway's Peonies.
Kelway, of England, has produced some very fine varieties, such as Baroness Schroeder, James Kelway, Lady Alexandra Duff, and various other sorts.
Albiflora, The Bride (Syn. La Fiancee) (Des. 1902); also Snowflake (Kel.). Very large; pure white. Tall, vigorous grower, free bloomer, very early. Finest single white. Distinct from the primitive species Albiflora. being the taller grower, much larger, finer flower. Identical with the single white sent out by Dessert as La Fiancee. However, to retain the name The Bride, to avoid confusion with the double white variety originated by Lemoine in 1898. $2.00.

Website/Catalog  (1910)  Page(s) 35.  
 
Single Peonies
Snowflake (Kelway). Large snow white, tinged blush on first opening. 75¢.

Website/Catalog  (1908)  Page(s) 39.  
 
Pæonia Chinensis, Chinese Pæony, Single Varieties
Snowflake. Snow white.

Book  (1907)  Page(s) 202.  
 
2347. *SNOWFLAKE; P. albiflora.
(1) 1904, Harrison's Paeony Manual, p. 52.
(2) *1906. Kelway's Cat., p. 109.

*One star before the name indicates that the variety has been pictured in the reference that is also starred.

Book  (1904)  Page(s) 52.  
 
Single Paeonys.
I name a few of the leading ones from Kelway's list.
Snowflake. Of smowy whiteness.

Website/Catalog  (1903)  Page(s) 4.  
 
Single Herbaceous Paeonies..Recent importations and the very best of their class ...
Snowflake, snowy whiteness. ...$2.00.

Website/Catalog  (1899)  Page(s) 16.  
 
Kelway's Lovely New Single-Flowered Herbaceous Pæonies for 1899. 5/- each.
Snowflake, of snowy whiteness.