Website/Catalog  (30 Nov 2013)  Includes photo(s).
 
Die Remontant Rosen u. a. (wie hier Mlle Renée Denis) bekommen aber dieses Jahr nochmal Mist (frisch aus dem Bioland-Kuhstall nebenan ;-)) als Winterschutz: Wenn man ihn nur alle paar Jahre verwendet (und im Frühjahr weitgehend wieder abträgt) ist die Gefahr einer Phosphat-Überdüngung nicht allzu groß. Strohigen Kuh-, Schweine- und Pferdemist kann man während der Winterruhe (Vegetationspause) übrigens unbesorgt auch frisch verwenden, das stört die Pflanzen überhaupt nicht.
In Fällen von vorzeitigem Dauerfrost ist frischer (also warmer) Mist oft die einzige Möglichkeit, überhaupt noch anzuhäufeln (weil alle anderen Materialien schon durchgefroren sind). Von dieser Option sollte man ruhig Gebrauch machen.

Translation: 
Hybrid Perpetuals and others (like Mlle Renée Denis here) will get this year dung again (fresh from the Bioland cowshed next door ;-)) as winter protection: If you only use it every few years (and largely remove it in spring), there is not too great a risk of phosphate over-fertilization. Straw cow, pig and horse manure can also be used fresh during the winter dormant period (vegetation break), as it does not bother the plants at all.
In cases of premature permafrost, fresh (i.e. warm) manure is often the only way to pile it up (because all other materials are already frozen through). You should make use of this option.

Book  (Dec 2000)  Page(s) 80.  
 
Mlle. Renée Denis
Hybrid Perpetual
Chédane-Guinoisseau & Pajotin-Chédane 1906

Book  (1936)  Page(s) 201.  
 
Denis, Mlle. Renée (HP) Chédane & Pajotin 1906; Margarete Dickson X Paul Neyron; white, center deep salmon, edges tender pink, very large, well double, chalice-for, fine form, opens, rounded broad petals, repeats well, very long firm stems, growth 7/10.

Magazine  (Aug 1930)  Page(s) 107.  
 
Les meilleurs Roses à cultiver en Anjou ... Rosiers hybrides (remontants) ...
Abel Carrière. Albert, la Blotais. Alsace et Lorraine. Ami Martin. André Leroy. Anna de Diesbach. Baron Girod de l'Ain. Baronne de Rotschild. Barbarossa. Captain Christy. Candeur Lyonnaise. Charles Margottin. Clio. Commandeur Jules Gravereaux. Eclair. Eugène Fürst. François Coppée. Général Jacqueminot. Georges Arends. Gloire de Bourg-la-Reine. Gloire de Chedane-Guinoisseau. Her Majesty. Honorine Duboc. Hugh Dickson. Jean Liabaud. Jules Margottin. La Mothe Sanguin. La Rosière. Laurent Carle. Madame Gabriel Luizet. Madame Isaac Péreire. Madame Louis Ricard. Madame Prosper Laugier. Madame Verrier Cachet. Madame Philibert Boutigny. Mademoiselle Renée Denis. Mademoiselle Louise Cretté. Margaret Dickson. Merveille de Lyon. Mistress John Laing. Magna Charta. Paul Neyron. Prince Camille de Rohan. Princesse de Béarn. Reine des Neiges. Roger Lambelin. Royat Mondain. Souvenir de Mme Chedane-Guinoisseau. Souvenir du Rosiériste Gonod. Ulrich Brunner.

Magazine  (5 Aug 1911)  Page(s) 374.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Renée Denis... Hybrid Perpetual, Ch. and Pajol, 1907, Margaret Dickson X Paul Neyron

Website/Catalog  (1911)  Page(s) 10.  
 
New Roses From 1910. Hybrid Perpetual Roses. Mlle. Renee Denis White shaded rose, centre salmon; growth vigorous; flower large and full, cupped form.

Website/Catalog  (1909)  Page(s) 10.  
 
New British & Continental Roses of 1908 at reduced prices. 
Mdlle. Renee Denis White shaded rose, centre salmon; growth vigorous; flowers large and full, cupped form.

Magazine  (1909)  Page(s) 186.  
 
Des meilleures variétés de Roses parmi les Nouveautés de 1906. Hybrides remontants. Renée Denis (Chedanne-Pajotin), arbuste très vigoureux, fleur très grande, pleine, en coupe, blanc fortement lave de rose tendre.