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
Paula vom dunklen Zwinger
 
Eicko vom Grenzblick
Falk Berkelau
Kimm vom Werseufer
Amigo vom Gronendamm
Lump vom Osterberger-Land
Jonny von der Rheinhalle