Book  (Apr 1999)  Page(s) 503.  
 
Thyra Hammerich
Hybrid Perpetual
[attribution should specify] Hugues Vilin as the breeder

Book  (1936)  Page(s) 328.  
 
Hammerich, Thyra (HP) Vilin or Ledéchaux 1868; Duch. of Sutherland X ? ; tender flesh-pink, vivid pistils, very large, very double, cupped to expanded, growth 7/10. Sangerhausen

(1905)  Page(s) 57.  
 
Rosiers hybrides remontants...
Thyra Hammerich (Ch. Verdier 1869), fl. très gr., pl., rose carné tendre, odor. ....-.75

Book  (1899)  Page(s) 171.  
 
Thyra Hammerich, HR, Vilin, 1868, carné

Magazine  (1899)  
 
Thyra Hammerich (Eug. Verdier) soft flesh-pink. compact.

Magazine  (1895)  Page(s) 255.  
 
Horticulteur français, Year 1868
Among the newest roses, Duchesse d'Aosta (tab. 7, p. 203) and Thyra Hammerich (tabula 11, p. 331) merit most attention. The latter has been bred by the well-known rose breeder Paul and Son from Duchesse de Sutherland. She is a vigorous grower and has beautiful and dark green foliage. The large white, but pink-shaded blooms are initially cupped, expand later somewhat more. She is very double.

Book  (1885)  Page(s) 36.  
 
TRIBE ROSEÆ.
ROSA, Linn.; Rose.
Garden Varieties—
Thyra Hammerich; hybrid perpetual. Plant in Brisbane Botanic Garden.

Book  (1882)  Page(s) 35.  
 
Thyra Hammerich... Variété recommandée pour l'ornement des jardins. Variété à cultiver pour les Expositions de fleurs. Hybride Perpétuel. V. Verdier. 1868 Rose carné. Fleur grande. Plante vigoureuse.

Book  (1880)  Page(s) Annex, p. 126.  
 
hybrid perpetual. THYRA HAMMERICH (Ch. Verdier, 1869), beautiful soft flesh-pink, very large, double, vigorous beautiful Rose of softest colouring.

Magazine  (May 1877)  Page(s) 5.  
 
Les Rosiers dans le Midi de la France
Voici la nomenclature d'un certain nombre de variétés de roses qui réussissent bien sous le climat du Midi:
Carné clair et blanchâtre.
...Thyra Hammerick...