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BRIEF [O.A.]
Merkel, Otto
Author:
Merkel, Otto
Recipient:
Haeckel, Karl
Dating:
14.02.1889
BRIEF [O.A.]
Sethe, Bertha
Author:
Sethe, Bertha
Recipient:
Haeckel, Karl
Dating:
12.02.1891
BRIEF [O.A.]
Haeckel, Ernst
Author:
Haeckel, Ernst
Recipient:
Haeckel, Karl
Dating:
??.11.1897
1–3
of 3
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