Book  (Apr 1999)  Page(s) 407.  
 
H.P. Pinkerton Hybrid Tea. H. Dickson 1918. The author cites information from different sources, including the 1919 American Rose Annual description at p. 102:
"Long buds; large, full flowers of brilliant scarlet, heavily flamed velvety crimson. Very free-flowering. Mildew-proof."

Book  (1958)  Page(s) 162.  
 
H. P. Pinkerton. Changed to Cleveland.

Book  (1958)  Page(s) 61.  
 
Cleveland (formerly H. P. Pinkerton). HT. (H. Dickson '16.) Dbl., fragrant, reddish copper on old-rose, base coppery yellow. (28)  
[Description of Cleveland II]

Book  (1936)  Page(s) 566.  
 
Pinkerton, H. P. (HT) H. Dickson 1918; glossy scarlet, streaked velvety crimson, large, double, very floriferous, repeats, elongated buds, good foliage, growth 7/10, upright, 1 m. Sangerhausen

Book  (1936)  Page(s) 160.  
 
Cleveland I (HT) A. Dickson 1916; coppery yellow, growth 6/10. 
[Description of Cleveland II]

Book  (1930)  Page(s) 107.  
 
H. P. Pinkerton. HT. (H. Dickson, 1918) Bud large, long-pointed; flower large, full, brilliant scarlet, flamed crimson. Foliage dark green, disease resistant. Growth vigorous, bushy, branching; continuous bloomer.

Website/Catalog  (1929)  Page(s) 13.  
 
Rosiers Hybrides de Thés (Remontants)
H. P. Pinkerton.—Arbuste vigoureux. Fleur superbe de forme exquise, large et pleine d'un beau coloris, rouge brillant intense, ombré de cramoisi velouté.

Website/Catalog  (1929)  Page(s) 14.  
 
Everblooming Roses
The so-called Everblooming Roses include the Hybrid Tea and Pernetiana groups. They do not bloom all the time, but if kept healthy and growing steadily, one crop of flowers succeeds another at brief intervals.
Cleveland. Hybrid Tea. (H. Dickson, 1916.) Very large, full flowers of old-rose and copper, gleaming with yellow at base of petals, moderately fragrant, borne singly on plants which are not always strong.
A flower of great beauty and the plants are fairly good, with attractive foliage of average quality.

Website/Catalog  (1926)  Page(s) 99, 100(photo).  Includes photo(s).
 
H. P. Pinkerton (1918) (Hybride de thé). Fl. gr., pl., écarlate brillant teinté de cram, velouté. Très flor. Extra !

(1924)  Page(s) 15.  
 
NEW ROSES, Season 1922-1923
H. P. Pinkerton. Hybrid Tea. (H. Dickson, 1918.) Brilliant scarlet flowers, flamed velvety crimson, produced on a vigorous-growing and free-flowering plant with mildew-resistant foliage.