Book  (Apr 1999)  Page(s) 445.  
 
Red Radiance Hybrid Tea. Pierson, 1916. Sport of 'Radiance'. The author cites information from different sources... Clear rich red... Differs from [Gude's 'Red Radiance'] only in color, a lighter shade of cerise-red...

Book  (1940)  Page(s) 189.  
 
Book  (1940)  Page(s) 189.  
 
Red Radiance... (Another less satisfactory sport - as to colour - was sent out by Pierson, but later withdrawn.)

Book  (1936)  Page(s) 594.  
 
Radiance, Red (HT) Pierson 1916; sport; light cherry red, small, otherwise like Radiance.

Magazine  (Mar 1922)  Page(s) 20.  
 
"New Roses for the Garden" by Charles E. F. Gersdorff
Intense dazzling crimson reds are all too rare. [...] Two sports of Radiance, both red, but of different tones, and both named Red Radiance, came out in 1916, one by A. N. Pierson Inc., and the other by Gude Bros. Co., Washington, D. C., have qualified as splendid bedding Roses. They have the size, form, and productiveness of their parent with an improvement in strength of stem. The Pierson sport, a light carmine-crimson, has been withdrawn by its originators in favor of the Gude form which they consider "a little better in color than ours" -- a dark carmine-crimson.

Book  (1917)  Page(s) 32.  
 
Selections from Recent Garden Roses by Aaron Ward, Roslyn, N. Y.
1916
Red Radiance. (Pierson.) Red; tall, bushy.

Book  (1915)  Page(s) 195.  
 
1915 Registrations. 'Red Radiance'. HT. (Sport). A. N. Pierson Inc., Cromwell, Conn.