Book  (Apr 1999)  Page(s) 556.  
 
Mosel Lambertiana. Peter Lambert 1920

Book  (Apr 1993)  Page(s) 391.  
 
Mosel Rambler, mauve, 1920, 'Mme. Norbert Levavasseur' x 'Trier'; Lambert, P. Description.

Book  (1990)  Page(s) 143.  
 
Mosel Peter Lambert 1920. Description. [One of its parents is 'Trier'] Trier is a beauitful city nestled on the banks of the Mosel. Flowers: double, lightly scented, violet-blue with a reddish centre...

Website/Catalog  (1938)  Page(s) 12.  
 
Once-blooming climbers. Mosel (Multiflora) (P. Lambert 20). Vigorous shrub up to 4 m., very floriferous. Colour similar to Schloss Friedenstein, darker, slaty blue-violet, quite large, double blooms in large trusses, med-early to late, very hardy.

Book  (1936)  Page(s) 494.  
 
Mosel (multiflora) Lambert 1920; M. N. Levavasseur X Trier; slaty blue-violet, center reddish violet, medium-size, double, lasting, in clusters of 20-50, fragrance 3/10, floriferous, repeats occasionally, growth 8/10, climbing, 2 m. Sangerhausen

Book  (1933)  Page(s) 201.  
 
MOSEL. P. Lambert, 1920. Another strange violet form of R. multiflora. Occasionally flowers in autumn.

Website/Catalog  (1926)  Page(s) 23.  
 
Ramblers. Multiflora. Mosel (Lambert 1920). Very vigorous, up to 4 m tall, very floriferous. Colouring similar to Schloss Friedenstein, darker, slaty violet, quite large, double blooms in large trusses, medium-early to late.