Book  (Apr 1993)  Page(s) 275.  
 
Hybrid Perpetual (Old Garden Rose), dark red, 1865, Verdier, E. Flowers red shaded maroon, double (48 petals); very fragrant; vigorous growth.

Book  (Jun 1992)  Page(s) 136.  
 
John Keynes Hybrid Perpetual. Simon Louis/E. Verdier, 1864. [The author cites information from different sources. The Journal des Roses says this rose was named for a celebrated English rosarian, Mr. John Keynes, of Salisbury.]

Book  (1936)  Page(s) 384.  
 
Keynes, John (HP) L.S. or E. Verdier 1864; scarlet with maroon, large, double, floriferous, growth 7/10

Website/Catalog  (1913)  Page(s) 19.  
 
Hybrid Perpetual Roses.
John Keynes
This is one of the older varieties of the Hybrid Perpetuals. It is red to maroon in color, and fragrant. The flowers are of good size and solid, and the plant blossoms freely. The bush is strong and healthy, and withstands extreme cold. The John Keynes Rose, while making no great pretensions, has won a place and withstood the test of time. An earnest, conscientious sort of fellow that gets right down to business in a humble manner, asking few favors, but paying for everything received in the way of attention with quantities of blooms that really are worth considerable effort to secure.

Book  (1906)  Page(s) 79.  
 
5.099. John Keynes, Hybride Remontant, Louis S. 1864 écarlate

Magazine  (Jun 1902)  Page(s) 84.  
 
NÉCROLOGIE - EUGÈNE VERDIER
Rosiers Mis au Commerce par Eugène Verdier.
John Keynes: Hybride Remontant, 1864.

Book  (1902)  Page(s) 122.  
 
Hybrides Remontants. Groupe E. — Général Jacqueminot
Les rosiers formant ce groupe, le plus important de tous, sont des arbustes de végétation vigoureuse, très florifères et portant beaucoup à fruit. Rameaux allongés, généralement gris; aiguillons nombreux, crochus; feuillage vert foncé, folioles ovales; floraison le plus souvent en corymbe; fleur forme en coupe ou chiffonnée, frisée, quelquefois globuleuse, coloris du rouge clair au pourpre noirâtre; fruits abondants, de forme plutôt arrondie.
3919. John Keynes... (E. Verdier 1864)... rouge écarlate.

Book  (1885)  Page(s) 34.  
 
TRIBE ROSEÆ.
ROSA, Linn.; Rose.
Garden Varieties—
John Keynes; hybrid perpetual. Plant in Acclimatisation Society's Grounds, Bowen Park and in Brisbane Botanic Garden.

Website/Catalog  (1885)  Page(s) 70.  
 
Hybrid Perpetual Roses
John Keynes  Bright reddish-scarlet, shaded with maroon, large and full.

Book  (1882)  Page(s) 15.  
 
John Keynes... Hybride Perpétuel. E. Verdier. 1864 Rouge vif. Fleur grande. Plante vigoureuse.