Book  (Jun 1992)  Page(s) 109.  
 
Monsieur Cordeau Borbon. Moreau-Robert 1892... violet pink... [Author cites information from different sources.]

Book  (1990)  Page(s) 66.  
 
Monsieur Cordeau Bourbon. Moreau and Robert 1892. Description... very large, double blooms of bright scarlet-crimson...

Book  (1936)  Page(s) 173.  
 
Cordeau, Mons. (Bourbon) Mor. & Rob. 1892; vivid carmine, shaded vermilion-violet, very large, double, globular, fragrance 8/10, floriferous, many prickles, thick branches, growth 7/10, climbing. Sangerhausen

Book  (1899)  Page(s) 131.  
 
Monsieur Cordeau, Bourbon, Moreau-Robert, 1892, rouge vif