BILDPOSTKARTE Santoro-Silipigni, Giovanni Author: Santoro-Silipigni, Giovanni Recipient: Haeckel, Ernst Corporation: Primo Congresso Universitatio Nazionale Anticlericale Dating: 15.02.1900
BILDPOSTKARTE Ficalbi, Eugenio; Ficalbi, Saffo Author: Ficalbi, Eugenio; Ficalbi, Saffo Recipient: Haeckel, Ernst Dating: 22.12.1914