Book  (Apr 1993)  Page(s) 166.  
 
Europa Hybrid Tea, flowers bright pink [mp], 1928, 'Columbia' sport; Keessen [sic]; Nieuwesteeg.

Website/Catalog  (1936)  
 
p65. 'August Noack'. (HT) (Kordes, 1928). F3. In every respect a real unaltered Columbia, except colour, which is cerise. It is considered to be the best of three red sports of this variety, thus superseding Europa and 'F. Louise Lindecke'.

p54. ….As in 'Mme. Butterfly' there are many sports of 'Columbia' of somewhat similar appearance. 'August Noack', Europa, and 'Frau Luise Lindecke' are sometimes quite dark, almost a light red, 'Lucinda', 'Columbia Supreme', 'New Columbia', 'Scott’s Columbia', 'Rose Hil'l, 'Silver Columbia' and 'J. K. B. Roos' vary slightly from the original, but in our testing, 'Briarcliff' appears to be more free from the crippled flower tendency than the parent.

Book  (1936)  Page(s) 246.  
 
Europa (HT) Keesen 1928; sport of Columbia; glossy deep pink, large, well double, elongated form, lasting, fragrance 7/10, floriferous, long strong stems, upright, habit like Columbia. Sangerhausen

Website/Catalog  (1934)  Page(s) 113.  
 
Europa (HT) (J. Keessen, 1928) Fiore molto doppio, di forma eccellente e di lunga durata, d’ottimo profumo, rosa carico puro. Quantunque recente, ha preso uno dei primi posti come rosaio per fiori recisi.

Book  (1934)  
 
Europa (H.T.): Dark rose, very fragrant. Growth free.

Book  (1933)  Page(s) 148.  
 
Proof of the Pudding.
Europa HT (Keesen, 1928) A.R.A., 1928; P.P. 1930, 1931. Very similar to the old Hybrid Perpetual, 'Paul Neyron' at Ontario.

Website/Catalog  (1933)  
 
Ibridi di The. Europa, rosa scuro purissimo, di lunga durata.

Website/Catalog  (1933)  Page(s) 86, 89 (photo).  Includes photo(s).
 
Europa (Hybrid Tea). Outstanding improvement of the well-known sort Columbia. The colour is inside light amaranth-pink (9 pa), outside light pink (9 ca), petal base whitish yellow. The blooms stand on long strong stalks, are large, very well double, and very fragrant. .... Low garden plants 1 piece RM [Reichsmark] -.60   10 pieces RM 5.50

Magazine  (Dec 1932)  Page(s) 108.  
 
Europa (J. Keesen). — Fleur très double de forme allongée : coloris rose foncé pur. Bien parfumée. Convient pour la fleur coupée.

Book  (1930)  Page(s) facing p. 80.  Includes photo(s).