TELEGRAMM Schillings, Carl Georg Author: Schillings, Carl Georg Recipient: Haeckel, Ernst Dating: 11.04.1905
TELEGRAMM Schillings, Carl Georg Author: Schillings, Carl Georg Recipient: Haeckel, Ernst Dating: 28.05.1911
TELEGRAMM Schillings, Carl Georg Author: Schillings, Carl Georg Recipient: Haeckel, Ernst Dating: 22.08.1904