Book  (Dec 2000)  Page(s) 123.  
 
Earl of Dufferin
Hybrid Perpetual
Alexander Dickson 1887

Book  (Apr 1993)  Page(s) 149.  
 
Hybrid Perpetual, dark red, 1887, Dickson, A. Description.

Book  (Jun 1992)  Page(s) 129, 330.  
 
Page 129: Earl of Dufferin Hybrid Perpetual. A. Dickson, 1887. [Author cites information from different sources.]
Velvety-crimson, shaded with maroon... bright velvety carmine-red, shaded with deep chestnut-brown... for exhibitors, but not for garden culture...
Page 330: Earl of Dufferin Hybrid Perpetual. Alexander Dickson 1887

Article (magazine)  (Dec 1951)  Page(s) 208.  
 
Earl of Dufferin Description... Blooms are light crimson red, shading to a much lighter red...

Book  (1936)  Page(s) 222.  
 
of Dufferin, Earl (HP) A. Dickson 1887; glossy velvety crimson, shaded dark maroon, large, double, globular, nodding, lasting, fragrance 8/10, floriferous, continuous bloom, autumn-bloomer, growth 7/10, well-branched. Sangerhausen

Website/Catalog  (1929)  Page(s) 38.  
 
Hybrid Perpetual Roses
Earl of Dufferin. (A. Dickson & Sons, 1887.) Pure, velvety crimson, shaded with chestnut-red; fine globular flowers, held erect, and richly perfumed. A strong, vigorous grower, blooming over a long season.
Needs favorable weather conditions to develop its best color and form, but when it is good, it is superlatively good.

Website/Catalog  (1922)  Page(s) 39.  
 
Hybrid Perpetual Roses. (10) Earl Of Dufferin (A. Dickson) I. Dark velvety crimson shaded maroon and black; blooms perfectly formed; free blooming.

Website/Catalog  (1921)  Page(s) 14.  
 
Roses.
Earl of Dufferin, velvety crimson; class: Hybrid Perpetual; habit of growth: vigorous.

Website/Catalog  (1917)  Page(s) 43.  
 
Hybrid Perpetual Roses
Earl of Dufferin. — Deep velvety crimson flowers, shaded with dark maroon; of fine form, large and full.

Website/Catalog  (1914)  Page(s) 12.  
 
Hybrid Perpetual Roses.
Earl of Dufferin, Alex. Dickson & Sons, Ltd., 1887, vigorous. Rich velvety crimson, shaded maroon; very large, full and fine.