Website/Catalog  (1938)  Page(s) 29.  
 
Bush Roses
Madame Helen Dapples (Hybrid Tea)... Bright crimson red; long elegant bud, large well-formed bloom. Strong bushy growth and very free flowering. Very highly perfumed. Introduced 1933.

Book  (1936)  Page(s) 28.  
 
Harry H. Hazlewood.  The New Roses of 1936. 
Madame Helen Dapples (Heizmann) is described in the nursery notes as "just a red Rose". 

Website/Catalog  (1936)  Page(s) 41.  
 
New Roses 1936.  Madame Helene Dapples (HT.  E. Heizmann 1933)  Bright scarlet, ideal for bedding, very floriferous.​ 4/- each.
The colour is rich, dark crimson, rather than scarlet.  20 petals.

Book  (1936)  Page(s) 192.  
 
Dapples, Mme. Hélène (HT) Heizmann 1932; M.H. Winnett X Maureen Stewart; glowing velvety blood-red, large, semi-double, lasting, cluster-flowered, fragrance 7/10, floriferous, repeats well, growth 6/10, upright