This bloodline traces back the sires to what have been identified as the 3 foundation lines of the German Shepherd. Mutz von der Pelztierfame, Quanto von der Wienerau and Canto von der Wienerau.
The bloodlines may not be complete either because no information is available or the data has not yet been completed. 

Sire Bloodlines for
Freia vom Röderbrunnen
 
Marc vom Herkulesblick
Erko vom Eisfeld
Cliff vom Wolfendobel
Ari vom Neffeltal
Kerry vom Stahlhammer