Website/Catalog  (1966)  Page(s) 48.  
 
« Marcel Moser ». Fleur plus grande et plus foncée que « Nelly Moser». Pétales pointus avec ligne médiane plus foncée.

Website/Catalog  (1924)  Page(s) 107.  
 
Marcel Moser (Lanuginosa). Très grande fleur, beau mauve tendre, bande médiane violet carminéfoncé au centre.

Website/Catalog  (1919)  Page(s) 67.  
 
Clematis Jackmanni-Hybrids....Marcel Moser, mauve-coloured with dark violet edges... 10 pieces M 35.-, 100 pieces M 300.-

Book  (1915)  Page(s) 176.  
 
Clematis. — There is no more popular hardy climber than the Clematis.  One or two should be grown in the smallest garden.  They can be used to cover any structure from a few feet to 50 feet high.  A selection of different sorts will ensure a succession of flowers from April to October. [...] There are numerous named varieties; a dozen of the best to furnish flowers from May to October are as follows:
Marcel Moser, violet-mauve, with reddish bars...

Website/Catalog  (1912)  Page(s) 78.  
 
Summer and Autumn Clematis.
In bloom from July to October.
These flower upon the wood of the current year's growth, and should therefore be pruned to five or six eyes.  
Marcel Moser, very large pale violet, with a distinct red bar; good...  2s. 0d.

Book  (1906)  Page(s) 52.  
 
Principal garden varieties of Clematis:
Lanuginosa type. (July to October.)
Marcel Moser... Mauve-violet, red bar.

Website/Catalog  (1902)  Page(s) 11, 39.  
 
Clematis Novelties!  Clematis Marcel Moser. Also one of the select few, healthy sorts with extra large blooms; light blue with reddish central stripe. 1 piece M. [Mark] 1.50, 10 pieces M. 27.50

Book  (1898)  Page(s) 63-4.  
 
Variétés Horticoles
1er Groupe.—PATENS
Section II. — Lanuginosa.
Marcel Moser (Cripps). Très grande fleur à sépales lancéolés, d'un beau mauve tendre, avec une bande médiane violet foncé. Variété nouvelle et très distincte.