Francis Dubreuil was selected in the first draft of the 300 best rose in the Les Amis des Roses - July- August 1934 edition, Pages 97-101.

Here is an approximate translation of the beginning of the article:

23rd congress of the French association of roasarians
Les Amis des Roses
Lyon July 2nd 1934

The selection of 300 varieties of roses in all classes

Our association has addressed this very important question of rose cultivation in France.
Last year, in the Orléans convention, it was decided to choose 300 rose varieties from the most beautiful & the most remarkable, in order to facilitate the hobbyist's choice, whom are often overwhelmed by the numerous varieties described in catalogues. This nomenclature was also crucial for professionals who have the greatest interest in cultivating preferably roses that could be requested by their customers.

In the course of the year, we have received the research of many hobbyist. We thank them all. Except oversight on our part, we quote:
Messrs A. LEBLANC, de Dieulefit (Drôme) ; MURAOUR, of Paris ; DR. MOREL, of La Pouèze (Maine-et-Loire) ; OLDANO, of Paris, who have provided many important elements.
ON several occasions a special commission took place at the French association of Rosarians and they have listed the 300 most beautiful varieties of roses to recommend to hobbyists. OUr readers can list the full list.
Our convention didn't want to finalize the list, This work is too important and delicate to be finalized in one year.
So, we ask all our readers to send us their observations. All submissions will help to establish in a definitive manner the 300 best varieties for our next convention at Grenoble.