Book  (2006)  Page(s) 111.  
 
Schneewittchen [new in catalogue]. Pol. Good reliable rebloom. Moderate fragrance. Habit diagram 2 [e.g. 'The Fairy' and 'Marie Pavie']. Lambert, 1901. Provenance Schultheis. A rounded, fine-stemmed mound with dark stems and very small double flowers of bright white. Never out of bloom; we suspect that this may be identical to 'Katharina Zeimet', but need to study this more.

Book  (1978)  Page(s) 156.  
 
In the year he introduced Katharina Zeimet, Peter Lambert brought out another white Polyantha called 'Schneewittchen' , which name was later used for the famous 'Iceberg'. 

Website/Catalog  (1938)  Page(s) 20.  
 
Polyantha. Schneewittchen (P. Lambert 01). Upright, 40-50 cm. high, small, ivory-white, egg-yolk-yellow stamens, upright. Short.

Book  (1936)  Page(s) 651.  
 
Schneewittchen (polyantha) Lambert 1901; Aglaia X seedling of Paquerette X Sv. M. Levet; ivory-white, fades to pure white, yellow stamens, small, semi-double, regular, in clusters of 15-60, fragrance 5/10, floriferous, continuous bloom, glossy light green foliage, growth 5/10, upright, bushy, short, dense. Sangerhausen

Book  (1931)  
 
p76. Lewis Levy. The History and Evolution of the Dwarf Polyantha.
....Lambert followed these in 1901 by introducing 'Katharine Zeimet', another white, and Schneewittchen

p82. ibid. 1901. 'Katharine Zeimet'. 'Etoile de Mai' x 'Marie Pavie'. Pure white. P. Lambert.
1901 Schneewittchen 'Aglaia x 'Ma Paquerette' x 'Souv de Mme. Levet'. Creamy white. P. Lambert.

Website/Catalog  (1926)  Page(s) 72.  
 
Polyantha. Schneewittchen (P. Lambert 1901). Small, double, cream-white, floriferous.

Website/Catalog  (1925)  Page(s) 84.  
 
Rosa Polyantha...Schneewittchen. Ivory-white. ...Low-grafted garden plants 1 piece G.-M. [Gold-Mark] 1.- 

[no longer listed in the 1929 catalogue]

Book  (1924)  
 
Schneewittchen Aglaia x seedling from Paquerette x Souvenir de Mme Levet
Reference courtesy of Behcet Ciragan.

Website/Catalog  (1921)  Page(s) 35.  
 
Roses.
Schneewittchen, creamy white; class: Polyantha; habit of growth: robust.

Website/Catalog  (1921)  Page(s) 65.  
 
Polyantha Roses...Schneewittchen, ivory white