Book  (Jun 1992)  Page(s) 102-103.  
 
'Souvenir de la Malmaison' sported 'Kronprinzessin Viktoria' (Volvert, 1888 [milk-white]); 'Mme Cornélissen' (Cornélissen, 1865 [yellowish pink]); 'Mlle Berthe Clavel' (Chauvry, 1891 [yellow and pink]); 'Mlle Marie-Thérèse de la Devansaye' (Chédane-Guinoisseau 1895 [pure white])

Book  (1936)  Page(s) 159.  
 
Clavel, Mlle. Berthe (Bourbon) Chauvry 1892; sport of Souv. de la Malmaison; white, pink center, base yellowish, reverse marbled and striped violet and bright pink, large, double, floriferous, growth 6/10; = [similar to] Mme. Cornelissen.

Book  (1906)  Page(s) 111.  
 
7.158. Mademoiselle Berthe Clavel, Ile-Bourbon, Chauvry 1892 jaune et rose, syn. Mme Cornelissen