Book  (11 Jun 1993)  Page(s) 69.  
 
R. rugosa seedling x 'Richmond'. Berger (Germany) 1925. Description... clusters of single 3 1/2-inch blooms, crimson-scarlet...

Book  (1947)  Page(s) 232.  
 
Rugosa. Berger's Erfolg. Single crimson-scarlet. Berger 1925. June-August.

Book  (1940)  Page(s) 19.  
 
Vincent Berger, Bokau bei Aussig, Czechoslovakia. 'Bergers Erfolg'... Bergers Erfolg Hybrid Rugosa. (V. Berger; introduced by Pfitzer 1925.) R. rugosa seedling x 'Richmond'... fire-red, yellow stamens...

Website/Catalog  (1938)  Page(s) 47.  
 
Rugosa Roses and their Hybrids (R. Rugosa).
These do not require pruning after the first season, except cutting away dead wood.
Berger's Erfoig... Bright glowing red with golden yellow stamens. Very perpetual from June till Autumn. Large, single. Introduced 1925.

Book  (1936)  Page(s) 70.  
 
Berger's Erfolg (Hybrid Rugosa) Berger 1923; King George V X Mrs. Ar. Ward; bright fire-red, retains colour, 7-10cm, single, golden-yellow stamens, in clusters of 5-20, floriferous, repeats well until autumn, growth 7/10, climbing habit, 1m., hardy. Sangerhausen

Website/Catalog  (1935)  Page(s) Spring issue, p. 98.  Includes photo(s).
 
Bergers Erfolg

Same photo: 1936, p. 130

Website/Catalog  (1934)  Page(s) 94.  Includes photo(s).
 
Rosa rugosa ...Bergers Erfolg. Large bloom, long-lasting, single, bright amaranth-red (9 ra), very effectful, continuous blooming, widely shining ....Low garden plants 1 piece RM -.70  10 pieces RM 6.50

Website/Catalog  (1933)  Page(s) 94.  
 
Rosa rugosa ...Bergers Erfolg. Large bloom, long-lasting, single, bright crimson, very effectful, continuous blooming, widely shining ....Low garden plants 1 piece RM -.70  10 pieces RM 6.50

Website/Catalog  (1931)  Page(s) 33.  
 
Rosa rugosa Bergers Erfolg Overabundant bloom, light rose-pink, 120/150 cm, July, repeats ....1,20 Mark [10] 10,80 [100] 96,--

Magazine  (Jul 1930)  Page(s) 90.  
 
Hybrides de R.rugosa ... Bergers Erfolg. — Turbat (?), rouge brillant.