Article (magazine)  (Jan 1955)  Page(s) 58.  
 
Alphabetical Check List of Tree Peony Names In  Public Collections And/or Available in Nurseries 1954-1955
Japanese, Purple, 'Mure-garasu' (Flock of Crows) (Jap. bef. 1932), [Gardens] Scott Foundation, John J. Tyler Arboretum