Book  (Apr 1993)  Page(s) 420.  
 
Omar Pacha Bourbon, bright cherry, 1863, Pradel. Description.

Book  (Jun 1992)  Page(s) 109.  
 
Omer-Pacha Bourbon. Pradel 1854... [Author cites information from different sources.]... different sources say the color is purple, brilliant red, delicate pink...

Book  (1936)  Page(s) 525.  
 
Omer Pacha (Bourbon) Pradel 1853; soft pink, shaded velvety bluish purple, medium size, double, floriferous, growth 8/10.

Book  (1906)  Page(s) 130.  
 
8.380. Omer Pacha [sic], Ile-Bourbon, Pradel 1853 rose tendre

Book  (1902)  Page(s) 94.  
 
Ile Bourbon...
2704. Omer Pacha (Pradel 1853), rose tendre

Book  (1899)  Page(s) 137.  
 
Omer Pacha, Bourbon, Pradel, 1853, rose tendre
 

Book  (1885)  Page(s) Vol. II, p. 175.  
 
Bourbon. Omer Pacha. Pradel 1853. Fleur moyenne, pleine; rose tendre.

Book  (1880)  Page(s) Annex, p. 101.  
 
bourbon, Omer Pascha (Pradel 1854). purple velvety bluish, slaty-coloured, large, double, imbricated, floriferous.

Book  (1866)  Page(s) 236.  
 
Bourbon ... Omer Pacha, large, double, slate-coloured, shaded velvety purple, imbricated; mild flowering. Pradel, 1854.

Magazine  (1862)  Page(s) 169.  
 
Of purple crimsons, Paul Joseph, Omar Pacha, and Dr. Lepestre are among the very best.