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BRIEF [O.A.]
Schreiber, Hugo
Author:
Schreiber, Hugo
Recipient:
Haeckel, Ernst
Dating:
07.01.1912
BRIEF [O.A.]
Schreiber, Hugo
Author:
Schreiber, Hugo
Recipient:
Haeckel, Ernst
Dating:
15.02.1914
BRIEF [O.A.]
Heck, Hermann
Author:
Heck, Hermann
Recipient:
Haeckel, Ernst
Dating:
28.08.1905
BRIEF [O.A.]
Leven, Leonhard
Author:
Leven, Leonhard
Recipient:
Haeckel, Ernst
Dating:
08.02.1906
BRIEF [O.A.]
Leven, Leonhard
Author:
Leven, Leonhard
Recipient:
Haeckel, Ernst
Dating:
15.03.1906
BRIEF [O.A.]
Krukenberg, H...
Author:
Krukenberg, H...
Recipient:
Haeckel, Ernst
Dating:
23.10.1911
BRIEF OHNE UMSCHLAG
Krall, Karl
Author:
Krall, Karl
Recipient:
Haeckel, Ernst
Dating:
09.11.1915
BRIEF OHNE UMSCHLAG
Krall, Karl
Author:
Krall, Karl
Recipient:
Haeckel, Ernst
Dating:
28.10.1916
BRIEF OHNE UMSCHLAG
Krall, Karl
Author:
Krall, Karl
Recipient:
Haeckel, Ernst
Dating:
17.02.1919
BRIEF OHNE UMSCHLAG
Krall, Karl
Author:
Krall, Karl
Recipient:
Haeckel, Ernst
Dating:
06.07.1918
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