Book  (1936)  Page(s) 747.  
 
von Wangenheim, Freifrau Ella (tea) Jacobs 1908; K. Aug. Viktoria X ? ; deep golden-yellow, lasting, medium to large, double, form of Kaiserin, fragrance 5/10, floriferous, repeats, growth 6/10, very well-branched.

Magazine  (10 Jun 1911)  Page(s) 278.  
 
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...
Freifrau Ella von Wangenheim... Tea, Jacobs, 1908, Seedling Kaiserin Augusta Victoria

Website/Catalog  (1911)  Page(s) 15.  
 
Tea-Scented Roses. Freifrau Ella von Wangenheim Golden yellow; full and well formed; buds long; blooms freely; small. Mod.