Book  (1921)  
 
p134. Charles H. Totty, Madison, N.J. Greenhouse Roses This Year and Last.
Mrs. John Cook is not much of a factor in the market, and it is a question in my mind if it would not have been better to have introduced this as an outdoor rose, where it belongs. John Cook, the introducer of this variety, has given us some wonderful outdoor roses, including Radiance, My Maryland, and others. I believe' Mrs. John Cook' will make a very fine outdoor white.

p166. Editor. Rose Notes. One of the rose sensations of 1920 was Mrs. John Cook, another of the originations of the great Baltimore worker, who has twice earned the Silver Medal of the American Rose Society — once for Panama, in 1913, and again for Radiance, in 1914.

p ii. Cromwell Gardens New Roses advertisement.
Mrs. John Cook. Color, ivory-white, occasionally suffused with light pink during cool weather but usually opening clear white in every petal. The bud is firm and of nice formation, opening into a cup-shaped flower of enormous proportions, but without a trace of coarseness in any stage; the large flaky petals are of splendid texture and are well-rounded in form. When well established, it will produce flowers larger than Frau Karl Druschki...The growth is robust in character, branching continually from the base, producing long stemmed flowers of exquisite fragrance, and developing a rugged, hardy plant.

Book  (1920)  
 
p133. The New New Roses
Mrs. John Cook, H.T. (John Cook; intro. by A. N. Pierson, 1920.) Ophelia x three unnamed seedlings. Bud large, long-pointed; flower large, cupped, double, on long, strong stems; lasting; fragrant. Color white, suffused delicate pink; pink flush deeper in cool weather; almost white on long sunny days.

p166. New Roses Registered in 1919
From John Cook, Baltimore, Md., June 30, 1919. Mrs. John Cook. H.T. Ophelia x three unnamed seedlings. Large, deep cup-shaped, but long-pointed flowers of white suffused with delicate pink; fragrant; petals large and waxy; very lasting. An unusually strong grower and free bloomer, with large, leathery foliage.

p179 List of American Roses
Mrs. John Cook, H.T. (J. Cook, reg. A. R. S., 1919; intro. by A. N. Pierson, Inc., 1920.) Ophelia x three unnamed seedlings. 15.