Book  (19 Apr 2000)  Page(s) 499.  
 
'REKTOR FOERSTER', HT, pb, 1936; Description; [Golden Ophelia X Mme Caroline Testout]; Weigand, C.; Pfitzer

Magazine  (1937)  Page(s) 44.  
 
As the first sort, Ernst Grandpierre started at the turn of the century the novelty , which has meanwhile grown to 24 own new breedings and which were crowned by the last cultivar Frau Rektor Förster....