Website/Catalog  (1923)  Page(s) 23.  
 
Hybrid Tea Roses .... l'Avenir (Verschuren, 1918). Deep yellow.

Book  (1922)  Page(s) 396.  
 
A Descriptive List of Roses in Commerce.
L'Avenir (Hybrid Tea), H. A. Verschurren & Zonen 1918: Flower of beautiful yellow-brown colour and good holding.

Magazine  (4 Apr 1919)  Page(s) 203.  
 
L'Avenir (H. A. Verschuren & Sons 1918) Hybrid Tea. Fine decorative rose...