Book  (Apr 1999)  Page(s) 404.  
 
Gladys Harkness Hybrid Tea. A. Dickson 1901. The author cites information from different sources... Deep salmon pink, silvery pink reflections...

Book  (Jun 1992)  Page(s) 277.  
 
Gladys Harkness Hybrid Tea. A. Dickson, 1901. The author cites information from different sources... Deep salmon pink, silvery pink reflections; cupper... Inclining to the Hybrid Perpetual side of the class...

Book  (1936)  Page(s) 330.  
 
Harkness, Gladys (HT) A. Dickson 1900; velvety deep salmon-pink, silvery pink reflexes, very large, double, flat cup form, fine form, large petals, fragrance 8/10, floriferous, growth 7/10, upright. Sangerhausen

Website/Catalog  (1921)  Page(s) 17.  
 
Roses.
Gladys Harkness, salmon-pink; class: Hybrid Tea; habit of growth: vigorous.

Website/Catalog  (1914)  Page(s) 18.  
 
Hybrid Tea Roses.
Gladys Harkness, Alex. Dickson & Sons, Ltd., 1900, vigorous. Deep salmon pink, large, highly fragrant; fine.

Website/Catalog  (1912)  Page(s) 76.  
 
Ever-Blooming Roses.
Gladys Harkness salmon-pink, very large, vigorous, sweetly scented. 

Magazine  (10 Jun 1911)  Page(s) 278.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Gladys Harkness... Hybrid Tea, A. Dickson, 1900, Seedling Caroline Testout

Website/Catalog  (1911)  Page(s) 20.  
 
Hybrid Tea. Gladys Harkness. Salmon pink; of fine form. Very large and full; fragrant. Vig.

Book  (1910)  Page(s) 327.  
 
Gladys Harkness [Hybrid Tea]; flowers salmon pink, very large, good constitution and fragrant. A fine Rose.

Book  (1908)  Page(s) 316.  
 
*Gladys Harkness... (Hybrid Tea) A. Dickson & Sons, 1900. -- Deep salmon-pink, silvery reverse. -- Moderately vigorous. -- Garden. -- Good autumnal. -- (Prune moderately hard.)

*Roses to which asterisks (*) are affixed are suitable for exhibition.
[not listed in the 1920 edition]