Website/Catalog  (1931)  Page(s) 13.  
 
Japanese Peonies
Exquisite (Japan, 1912) 8.9. White. A single row of pure white guard petals surround a large center of white filamental petals bordered with yellow. A splendid variety. A Brand Division $3.00.

Book  (1928)  Page(s) 58.  
 
Check List of Japanese Peonies
Exquisite First. (Origin unknown.) White.

Website/Catalog  (1927)  Page(s) 30.  
 
Japanese Peonies: The Japanese peonies resemble the single peonies in that they have wide guard petals but instead of a tuft of pollen bearing stamens in the center they have a tuft of narrow petaloids.
Exquisite (Japan).  Beautiful white from Japan, center yellow.  Guard petals of fine form and good substance.  Each $5.00

Website/Catalog  (1926)  Page(s) [8].  
 
Japanese Peonies
These peonies are all the fashion now. Supply extremely limited.
8.9 Exquisite No 1, white...$5.00

Website/Catalog  (1921)  Page(s) [6].  
 
Japanese Peonies
Exquisite...$2.50

Website/Catalog  (1918)  Page(s) 3.  
 
Thirty-four of the Very Finest Standard Varieties
82 Exquisite—Single white, with golden stamens; a large flower, very free bloomer and erect grower; 23 to 25 inches high. Begin blooming May 29th. A charming variety.

Website/Catalog  (1908)  Page(s) 39.  
 
Pæonia Chinensis, Chinese Pæony. Japanese Single Varieties.
These single flowering varieties, with their large flowers, often six to seven inches across, are very showy. They form a distinct sub-group in this family.
Exquisite. White.

Book  (1907)  Page(s) 81.  
 
836. EXQUISITE; P. peregrina.
(1) 1899, Peter Barr & Son, Cat.
(2) 1900, Cyc. Am. Hort. p. 1191.
(3) 1904, Harrison's Paeony Manual, p. 53.
(4) 1906, J. F. Rosenfield's Cat.
(5) Cornell Plot No. 576.

More than one peony by this name is referenced here.

Book  (1907)  Page(s) 49.  
 
Japanese Peonies...
Exquisite. White, with yellow stamens.

Book  (1904)  Page(s) 53.  
 
The Japanese Peonys.
The nomenclature of this whole family is in a chaotic state, and the Paeony Society is hard at work naming and classifying them. I append Henry Dreer's list:
Exquisite. White with yellow stamens.