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, 'Impumon' (Gate of Impu) (Chug. 1932), [Gardens] University of Washington Arboretum, [Nurseries] william Gratwick

Magazine  (Sep 1944)  Page(s) 27.  
 
Tree Peony Supplement to the Manual
John C. Wister, Germantown, Pa.
Alphabetical Check List of Tree Peony Names, August 1944
Japanese Moutan type; Scarlet; *IMPU-MON (Gate of Impu) (Gate of Opulence) (Chugai, 1932) Chugai Shokobutsu Yen Nursery, near Kobe, Japan, 1932-40.

Name in Large Caps—not in Black Type—indicates accepted names of varieties not in American commerce 1944, but either grown in this country ( * ) or in Japanese commerce 1935-40.
*Grown in America 1944, but not in commerce here.