Book  (Apr 1999)  Page(s) 411-412.  
 
John Cook Hybrid Tea. Krüger 1917. Parentage: 'La France' x Unknown... whitish pink. John Cook, American rose breeder.

Book  (1936)  Page(s) 170.  
 
Cook, John (HT) Dr. Krüger 1917; La France X ?; white-pink, somewhat darker than La France, reverse much darker, large, double, firm, lasting, in clusters of 2-6, fragrance 5/10, floriferous, continuous-bloomer, upright stems, very thorny, growth 7/10, dense, bushy, 80cm., hardy

Website/Catalog  (1929)  Page(s) 3.  
 
Novelties and Scarce Roses
John Cook. Hybrid Tea. (Dr. Krüger, 1917.) Bud very dark pink or cherry-red; flower much like La France but backs of petals are very dark pink; moderately fragrant. Prolific bloomer and bushy. Foliage healthy.
A low, compact, extremely free-flowering plant of great beauty. One of the finest bedding Roses we have seen. It is extremely thorny and has a dormant period during midsummer when it is without flowers, but the autumn crop is fully equal to the first bloom. A first-class garden Rose. It is a seedling of La France. $1.50 each.

Book  (1926)  Page(s) xiii.  
 
[From an advertisement in the American Rose Annual 1926, p. xiii:] Kingsville Nurseries spotlighted Two Garden Roses That Are of Real Merit: 'Pink Beauty' (one of John Cook's best Roses, Silver Medal at Hartford Trial-Garden) and 'John Cook' (a new rose from Germany, much like the lovely old 'La France' but more vividly colored, and of dwarfer and more ever-blooming habit...

Website/Catalog  (1926)  Page(s) 90.  
 
Hybrid Teas. John Cook (Dr. Krueger 1917). Large, double, silvery fresh pink, reverse darker. Similar to the old valuable 'La France'. Healthy wood and foliage: happily growing, very floriferous, fragrant. Good cut rose.