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 E.T. von Sendling

Vantor von Batu

Ursus von Batu

Hobby vom Gletschertopf

Jeck vom Noricum

Odin v. Tannenmeise

Quando von Arminius

Xaver von Arminius

Lasso di Val Sole