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, Scarlet, 'Hino-tsukasa' (King of the Scarlets) (Jap. bef. 1931), [Gardens] Scott Foundation, Whitmal Park Botanical Gardens, University of Washington Arboretum, [Nurseries] Curtis Garden