Book  (Dec 1998)  Page(s) 437.  
 
Oklahoma Description... very dark red flowers with high centers and excellent symmetry... It does best in temperate climates: too much heat will scorch the dark red blooms and too much cold will turn them magenta...

Book  (Apr 1993)  Page(s) 417.  
 
Oklahoma Hybrid Tea, dark red, 1964, 'Chrysler Imperial' x 'Charles Mallerin'; Swim & Weeks. Description.

Book  (Feb 1993)  Page(s) 201.  Includes photo(s).
 
Oklahoma Large-flowered hybrid tea. Parentage: 'Chrysler Imperial' x 'Charles Mallerin'. USA 1964. Description and cultivation. Flowers: a magnificent, dark red rose, one of the darkest bred... an excellent cut flower...

Book  (1993)  Page(s) 106.  
 
The seeds for 'Mister Lincoln' -- a cross of two famous reds, 'Chrysler Imperial' and 'Charles Mallerin' -- were thought to have died in a refrigeration accident. Somehow they survived. Among the roses produced from these seeds in 1964 were two of the finest reds ever, 'Oklahoma' and 'Mister Lincoln'...

Book  (Aug 1990)  Page(s) 100.  Includes photo(s).
 
Oklahoma Description... the most famous of the so-called black roses...

Book  (1990)  Page(s) 61.  
 
Ted Phillips, Rosanna, Victoria.  Some of the Darker Reds and Others.  
Oklahoma  An excellent plant. The perfume is superb and long lasting. In the garden the colour is a good black red but it dulls quickly after cutting. Flowers have poor form and occasionally look ugly.

Article (misc)  (1980)  Page(s) 22.  
 
'Mister Lincoln', 'Oklahoma', and 'Papa Meilland'... [share] the same parentage ('Chrysler Imperial' x 'Charles Mallerin')

Website/Catalog  (1980)  Page(s) 12.  Includes photo(s).
 
Oklahoma

Website/Catalog  (1979)  Page(s) 9.  
 
OKLAOMA  Belle fleur double rouge foncé. Bouton allongé. Délicieux parfum. (60/70 cm).

[not listed in 1981, but again in 1983]

Book  (1971)  Page(s) 33.  
 
Herb Swim's Oklahoma and Mr. Lincoln are acceptable but not very good in this part of the world [British Isles], although they are near the top in America...