Article (magazine)  (Jan 1955)  Page(s) 56.  
 
Alphabetical Check List of Tree Peony Names In  Public Collections And/or Available in Nurseries 1954-1955
Japanese, Crimson, 'Abokiu' (Abo Palace) (Japan before 1896), [Nurseries] Oberlin Peony Gardens

Magazine  (Sep 1944)  Page(s) 12.  
 
Tree Peony Supplement to the Manual
John C. Wister, Germantown, Pa.
Alphabetical Check List of Tree Peony Names, August 1944
Japanese Moutan type; Crimson; ABOKIU (Syn. Abowkyu, Aboukin, Abomiya)
(Abo Palace) (Imperial Palace)
(Japan, before 1896) Tokio Nursery Company, Japan, 1896; Yokohama Nurseries, Yokohama, Japan, 1905; Chugai Shokobutsu Yen Nursery, near Kobe, Japan, 1932-39; Oberlin imported in 1890's, in 1942 renamed Crimson Queen; K. Wada, Hokomya Nurseries, Numazu-shi, Japan, 1937.
Name in Large Caps in Black Type indicates accepted names of varieties in American commerce 1944.

Book  (1907)  Page(s) 13.  
 
4. A BO KIU; P. moutan.
(1) 1903, Jap. Cat. Fewkes' MSS.

Website/Catalog  (1896)  Page(s) 12.  
 
Peonies.
Paeonia Mouton. Tree Peony.
This plant is already well-known to the West. Flowers in May, widely differing in color and form. Stems either shrubby or branched from the foot. The best species are native of central Japan. The flower often attains one foot in diameter. These plants have fanciful names in Japanese, which we give with as nearly as possible the English equivalent.
Double grafted set of 20, no two alike, $4.00. 1 case of 100 peonies comprising 25 varieties, $18.50.
II. Deep Crimson.
Abokyu, A Babylonian Palace...