Article (website)  (Mar 2004)  Page(s) [web page].  
 
"The Damask Perpetuals of the 1840's" by Brent C. Dickerson [copyrighted; used by permission]
1848
—'Dembrowski' (Vibert, 1848) Confused maddeningly easily with the -1842 Hybrid Bourbon 'Dombrowski', which was scarlet sometimes shaded with purple, and was perhaps by Victor Verdier, the following descriptions certainly pertain to Vibert's 1848 Damask Perpetual 'Dembrowski': "8-9 centimeters [to ca. 3½ inches], full, crimson violet purple; the only one of this color so far in this sort, it came frome a sport of the Damask 'Pope' which I [Vibert] enfixed" [M-L48/427]. "Flowers full, 8 cenyimeters across [ca. 3¼ inches], deep violet crimson; sport, enfixed by graft" [M-L49/234]. It was still around in 1862, when Robert & Moreau were offering it with the same description; and Singer recorded it in 1885 as "Flower large, full, very floriferous; color, crimson shaded with dark violet" [S]. Edward Dembrowski, writer who led a revolt against the Austrians in Krakow in 1846.

M-L = Travaux du Comice Horticole de Maine-et-Loire.
S = Max Singer's 1885 Dictionnaire des Roses.

Book  (Apr 1993)  Page(s) 129.  
 
Dembrosky Hybrid Perpetual (Old Garden Rose), deep crimson-violet, 1849, ('Dembrowski'); Vibert...

Book  (1936)  Page(s) 200.  
 
Dembrowsky (HP) Vibert 1849; dark crimson, shaded violet, large, double, floriferous.

Book  (1906)  Page(s) 45.  
 
2.961. Dembrowsky, Hybride Remontant, Vibert 1849 cramoisi violacé foncé

Website/Catalog  (1880)  Page(s) 250.  
 
Rosiers Portland ou Perpétuels, Rosa Portlandica
847. Dombrowski. — Moyenne, pleine, cramoisi velouté, très-belle.

Book  (1880)  Page(s) Annex, p. 36.  
 
hybrid perpetual, Dembrowsky (from Angers, 1849), crimson, dark violet, large, full, repeats well.

Book  (1858)  Page(s) 167.  
 
Rosa damascena bifera. Dembrowski, medium size, full, dark violet-crimson.

Book  (1853)  Page(s) 14.  
 
Autumnal Roses.
The Damask Perpetual.
91. Dembrowski;* flowers crimson, shaded with dark violet, large and full.

*The French florists have an ingenious way of obtaining Perpetual Roses, of which this variety is an instance. A Damask, or any other Summer kind, produces a chance bloom in the Autumn. Buds are taken from this and successive Autumn-blooming shoots from year to year, till an abundance of flowers are obtained in Autumn.

Book  (1850)  Page(s) 15.  
 
Rosa Damascena.
392 Dembrowski, groß, gefüllt, carmoisin mit tiefviolet (Vibert 1849)...60 Sgr.

Damask Roses.
392 Dembrowski, large, double, crimson with deep violet (Vibert 1849)...60 Sgr.

Magazine  (1848)  Page(s) Vol. 3, n.28, p. 427.  
 
[From "Description des Fleurs et des Fruits nés dans le département de Maine et Loire", by M. Millet, Président du Comice Horticole de Maine et Loire]
Cultures de 1848
Cultures de M. Vibert (Au Mail.) Roses Perpétuelles.
Dembrowski. 8 à 9 centim., pleine, pourpre violet cramoisi, seule encore de sa couleur dans l'espèce, elle provient d'un accident du Damas Pope que j'ai fixé.
...Ces différentes roses provenues de semis de M. Vibert seront mises au commerce cet hiver.