Book  (1981)  Page(s) 418.  
 
Veilchenblau. Climber (J.C. Schmidt 1909). 'Crimson Rambler' x 'Erinnerung an Brod'. Blue-magenta ("blue") with white eye, becoming blue-violet with age, small, 3cm./1.2 in. across, some scent, floriferous, in large trusses, non-recurrent; very vigorous, many stems, 3-4 m./10-13 ft.; nearly without prickles.

Book  (1966)  Page(s) 49, plate 58.  Includes photo(s).
 
Veilchenblau Climbing polyantha
Schmidt 1909 (Crimson Rambler seedling)
Numerous small violet-blue, fragrant flowers in very large clusters. Only flowers once in the middle of the summer. Almost thornless, vigorous growth with stems up to 9-12 ft. Thrives on shaded walls and the colour is then more beautiful than when grown in bright sunlight, where the flowers quickly fade. The colour is difficult to mix with other roses, but it looks well with the pale yellow varieties. It is perhaps best grown with white climbing roses, and should never be put against a red wall.

Book  (1958)  Page(s) 413.  
 
Veilchenblau (Violet Blue). R. (J. C. Schmidt, '09.) Crimson Rambler X ? Small (1¼ in.), semi-dbl., cupped, fragrant, violet, center white; huge cluster on short stem. Fol. large, pointed, glossy, light. Very vig. cl. (10-15 ft.) many canes; free bloom. Has been used as an understock.

Magazine  (Dec 1951)  Page(s) 4. trimester, p. 107.  
 
Bleu-violet lilas violacé passant au bleu d'acier, très original

Book  (1947)  Page(s) 253.  
 
Veilchenblau (Climbing polyantha) resembles Crimson rambler, except that its crimson semi-double flowers pass with age to a particularly dirty magenta-blue. It is exceptionally vigorous, with bright green foliage, but by no means worthy of any select or special place in the sun. Schmidt 1909...Without scent...June. Hardy.

Website/Catalog  (1946)  Page(s) 35.  
 
H. W. [Hybride de Wichuraiana]. — VEILCHENBLAU (Schmidt 1909). Petites fleurs violet passant au bleu d'acier.

Book  (1940)  Page(s) 23.  
 
Blue Rambler See 'Veilchenblau'

Website/Catalog  (1939)  Page(s) 85.  
 
Rosiers Polyantha sarmenteux non remontants. ... Veilchenblau Fleur moyenne double, lilas rougeâtre ou lilas rosé passant à l’améthyste et bleu d’acier

Magazine  (Dec 1936)  Page(s) 137.  
 
POLYANTHAS non remontants. ..
Veilchenblau. Variété bien connue aux fleurs lilas violacé d'aspect bizarre et d'un certain effet décoratif. Pendant les
heures du milieu du jour ces fleurs exhalent un fort parfum.

Magazine  (1936)  Page(s) 127. Vol 32.  
 
Rose Scott-Montcrieff. A Biochemical Survey of Factors for Flower Colour.
Complex anthocyanins occur more often in nature than might be supposed from the results of isolation and identification. ... The most interesting case recorded is that of the rose Veilchenblau, which appeared to develop less blue-red flowers in the very dry 1934 season than normally. The bluer petals were separated and found to contain complex as well as normal 3-5-dimonoside, while the redder petals contained less of the complex pigment. It is possible that acylation is an important stage in pigment metabolism.