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
Bessi von der Bickelwiese
 
Argo von der Kahler Heide
Narro von der Kahler Heide
Zello Blue-Iris
Negus vom Kirschental