Book  (Apr 1999)  Page(s) 457.  
 
Adolf Koschel ('Adolphe Koschel) Pernetiana. Kordes 1918. The author cites information fromd ifferent sources... Light orange yellow, nuanced red... The colour is a deep orange yellow heavily flushed with red...

Book  (Apr 1993)  Page(s) 3.  
 
Hybrid Tea, apricot blend, 1918, 'Harry Kirk' x 'Louise Catherine Breslau'; Kordes, H. Flowers orange-yellow; fragrant.

Article (magazine)  (Dec 1951)  Page(s) 557.  
 
Adolf Koschel Pernetiana. Wilhelm Kordes 1918

Book  (1940)  Page(s) 3.  
 
Adolf Koschel Hybrid Tea. (Kordes, '18)... orange-yellow

Book  (1936)  Page(s) 390.  
 
Koschel, Adolf (hybrid lutea) Kordes 1918; H. Kirk X L.C: Breslau; orange-golden-yellow, reddish shaded, large, very double, high-centered, solitary, fragrance 7/10 (Tea), floriferous, repeats, growth 6/10, upright, well-branched, Sangerhausen

Magazine  (Aug 1930)  Page(s) 108.  
 
Les meilleurs Roses à cultiver en Anjou ...  Rosiers Pernetiana (remontants) ...
Adolf Koschel. Beauté de Lyon. Georges Clemenceau. Climbing Louise-Catherine Breslau Climbing Madame E. Herriot. Jean C.-N. Forestier. Juliet. Les Rosati. Los Angeles. Louise-Catherine Breslau. Louis Barbier. Lyon Rose. Marie-Adélaïde de Luxembourg. Mistress Beckwith. Mistress Ramon de Escofet. Pax Labor. Président Bouché. Souvenir de Georges Pernet. Soleil d'Angers. Soleil d'Or. Souvenir de Claudius Pernet. Souvenir de Georges Beckwith. Willowmere.

Website/Catalog  (1927)  Page(s) 84.  
 
Adolf Koschel (1918), vivid orange-yellow, with reddish shadings, large, very double, tea rose fragrance, strong canes, vigorous (Pernet).  1 piece M -.80, 10 pieces M 7.-, 100 pieces M 65.-

Website/Catalog  (1926)  Page(s) 92.  
 
Adolf Koschel (1918) (Pernetiana). FI. jaune-orange intense avec des nuances rougeâtres, gr., bien pl., su pédoncule long et fort, à odeur de rose thé, bouton de forme superbe, très flor.

Website/Catalog  (1926)  Page(s) 74.  
 
Hybrid Teas. Adolf Koschel Hybrid Lutea. (W. Kordes 1918). Large, deep ochre-yellow bloom, shaded blood-red, blooms continuously.

Website/Catalog  (1925)  Page(s) 19.  
 
Adolf Koschel, 1918, ocher-yellow with blood-red shading