Book  (Jan 2000)  Page(s) 183.  
 
Hakodate Herbaceous Peony. Millet [no date given]. A Japanese white lactiflora

Website/Catalog  (1938)  Page(s) [12].  
 
Japanese Peonies
This type is characterized by five or more cup-shaped, rounded guard petals, surrounding a large center of staminodes or petaloids.
Hakodate—Pure white with a large golden center. Large. Finest white Japanese Peony. Very rare....$15.00 Each

Website/Catalog  (1928)  Page(s) 32.  
 
Peonies for the Future
There are scores of new Japanese, such as Joseph Plagne, Jacques Doriat, Antwerpen, Hakodate, Mr. G. F. Hemerik, and many more.