Book  (1936)  Page(s) 365.  
 
Izambart, Pierre (HP) Gautreau 1871; velvety crimson, medium size, double, growth 4/10.

Magazine  (29 Jul 1911)  Page(s) 362.  
 
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...
Pierre Isambart... Hybrid Perpetual, Gautreau, 1871, Seedling Triomphe de l'Exposition

Book  (1899)  Page(s) 143.  
 
Pierre Izambart, HR, Gautreau, 1871, cramoisi

Book  (1885)  Page(s) 199.  
 
....Pierre Izambart. GAUTREAU 1871. ...Fleur moyenne, pleine, bien faite; coloris cramoisi...; arbuste modérément vigoureux.

Book  (1882)  Page(s) 30.  
 
Pierre Isambart [sic]... Hybride Perpétuel. Gautreau. 1871 Rouge cramoisi. Fleur moyenne. Plante moyenne.

Book  (1880)  Page(s) Annex, p. 106.  
 
hybrid perpetual, Pierre Jyambart (Gautreau, 1872), velvety crimson, fine form.