Book  (2007)  Page(s) 279.  
 
Helen Taft (Brynes, 1913). HT.

Magazine  (7 Mar 1948)  Page(s) 112. Vol 41.  
 
Tea and Hybrid Tea Roses. Helen Taft, cerise pink.
A.N. Pierson, Inc. Cromwell, Conn, advertisement.

Book  (1936)  Page(s) 692.  
 
Taft, Helen (HT) Byrnes Dept of Agric. 1913; ?

Website/Catalog  (1928)  Page(s) 12.  
 
Hybrid Teas, Teas  and Pernetiana.
Helen Taft. Hybrid Tea. (Byrnes, 1913.) A rich cerise-pink. Flowers very large. A free bloomer and will become as famous as a bedding Rose  as is the variety President Taft. Growth very strong.

Book  (1922)  Page(s) 176.  
 
List of American Roses...
Helen Taft, H.T. (Byrnes, U.S. Dept. of Agric., 1913.) Syn. Miss Helen Taft. 15x, 46. (Source: F. L. Mulford, U.S. Dept. of Agriculture, Washington, D.C.)

Website/Catalog  (1920)  Page(s) 10.  
 
New Roses. Helen Taft - Rich, cerese [sic] pink. Blooms large and full; remarkably free bloomer, thus making it a fine bedding variety. Strong, vigorous growth.

Book  (1918)  Page(s) 145.  
 
List of American Roses...
Helen Taft, H.T. (U.S. Department of Agriculture, 1913.) Syn., Miss Helen Taft. 15.

Book  (1917)  Page(s) 122.  
 
Helen Taft, H.T. (U.S. Department of Agriculture, 1913.) 15.

Article (newspaper)  (21 Jan 1912)  
 
Rose Culture by Frederic J. Haskin.
While the U.S. department of agriculture has not devoted as much attention to rose culture as might be desired, experiments are constantly going on in the greenhouses at Washington, as well as in a number of state experiment stations and new plants are frequently originated. This spring a new pink rose to be known as the Helen Taft is likely to be placed upon the market. It had its inception last year as the result of a series of experiments. Only one plant was produced at first and the blossoms were sent to Secretary Wilson for a name. That gallant gentleman decided that the delicate pink was worthy of the name of the daughter of the White house. The seeds from this plant were carefully planted and there are now quite a number of plants which it is hoped will make it possible to place the 'Helen Taft' rose upon the market this year.

[NB: It seems as though Mr Haskin may not have realized that the 'Helen Taft' rose would not be propagated from seeds, but via cuttings or some other cloning process...]