Book  (1936)  Page(s) 714.  
 
Troendlin, Oberbürgermeister Dr. (HT) Kaiser 1904; sport of Testout; tender flesh-pink, shaded whitish, large 3/4-full, globular, solitary, otherwise like Testout. Sangerhausen

Website/Catalog  (1933)  Page(s) 88.  
 
Oberbürgermeister Dr. Troendlin (Hybrid Tea). Whitish yellow-gold (2,5 ba/3,5 ca). ...Low garden plants 1 piece RM [Reichsmark] -.45

[no longer listed in the 1938 catalogue]

Website/Catalog  (1925)  Page(s) 82.  
 
Hybrid Tea Roses...Oberbürgermeister Dr. Troendlin. Cream-white. ...Low-grafted garden plants 1 piece G.-M. [Gold-Mark] -.80

Book  (1919)  Page(s) 193.  Includes photo(s).
 
Oberbürgermeister Dr. Tröndlin

Magazine  (3 Jun 1911)  Page(s) 266.  
 
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...
Dr. Troendlin... Hybrid Tea, Kaiser, 1904, Sport Caroline Testout

Website/Catalog  (1910)  Page(s) 119.  
 
Pink...TH Oberbürgermeister Dr. Tröndlin

Book  (1906)  Page(s) 129.  
 
8.314. Oberbürgermeister Dr. Trœndlin, Hybride de Thé, E. Kaiser 1904 chair tendre