Book  (Dec 1998)  Page(s) 444.  Includes photo(s).
 
Oskar Cordel ('Oscar Kordel') Hybrid Perpetual. Lambert (Germany) 1897... The flowers are carmine, and there is a pleasing fragrance. It was named for the editor of a journal called The Voss Gazette...

Book  (Apr 1993)  Page(s) 426.  
 
Oskar Cordel Hybrid Perpetual, carmine, 1897, ('Oscar Kordel'); 'Merveille de Lyon' x 'Andre Schwartz'; Lambert, P. Description.

Book  (Jun 1992)  Page(s) 144.  
 
Oskar Cordel
Hybrid Perpetual
Lambert 1897
'Merveille de Lyon' x 'André Schwartz'
... bright rich carmine... Bright deep rosy-red... thorns... remontant... Dedicated to the Editor-in-Chief of the Voss Gazette... [Author cites information from different sources.]

Book  (1986)  Page(s) 108.  Includes photo(s).
 
Oskar Cordel
Hybrid Perpetual (1897)
['Merveille de Lyon' is one of its parents]
... an even carmine-pink... fragrant...

Book  (1937)  Page(s) 75.  
 
Oskar Cordel HP (Lambert 1897) [pollen quality] 40%

Book  (1936)  Page(s) 173.  
 
Cordel, Oskar (HP) Lambert 1897; Merv. de Lyon X André Schwartz; bright carmine, very large, double, high-centered, wide petals, rounded, solitary, fragrance 7/10, floriferous, long stems, upright, growth 7/10. Sangerhausen

Website/Catalog  (1929)  Page(s) 41.  
 
Hybrid Perpetual Roses
Oskar Cordel. (P. Lambert, 1898.) Very large buds and double, cup-shaped flowers of bright carmine, deliciously fragrant. A compact plant and practically a continuous bloomer.
A cross of Merveille de Lyon X André Schwartz, an old-fashioned Tea Rose, so that, like Frau Karl Druschki, it has Hybrid Tea ancestry. A fine Rose, little known here. Dropped from our list several years ago because of scarcity of stock.

Website/Catalog  (1921)  Page(s) 65.  
 
Hybrid Perpetuals....Red...Oskar Cordel

Book  (Apr 1915)  Page(s) 44, 63.  
 
Page 44: One of the "special" Hybrid Perpetuals the author believed should be included in large gardens or collections.
Page 63: Oskar Cordel Hybrid Perpetual. Lambert, 1897. Description and cultivation... Bright carmine. Dr. Huey recommends this rose as a fair autumn bloomer...

Website/Catalog  (1914)  Page(s) 13.  
 
Hybrid Perpetual Roses.
Oskar Cordel, P. Lambert, 1897, vigorous. Bright carmine, large, full; sweetly scented.