POSTKARTE Stichling, Gottfried Theodor von Author: Stichling, Gottfried Theodor von Recipient: Haeckel, Ernst Dating: 23.01.1884
BRIEF [O.A.] Stichling, Gottfried Theodor von Author: Stichling, Gottfried Theodor von Recipient: Haeckel, Ernst Dating: 02.01.1884
TELEGRAMM Stichling, Gottfried Theodor von Author: Stichling, Gottfried Theodor von Recipient: Haeckel, Ernst Dating: 25.03.1884
BRIEF OHNE UMSCHLAG Stichling, Gottfried Theodor von Author: Stichling, Gottfried Theodor von Recipient: Haeckel, Ernst Dating: 14.07.1884
TELEGRAMM Stichling, Gottfried Theodor von Author: Stichling, Gottfried Theodor von Recipient: Haeckel, Ernst Dating: 06.05.1884