BRIEF OHNE UMSCHLAG Sokolowsky, Alexander Author: Sokolowsky, Alexander Recipient: Haeckel, Ernst Dating: 25.08.1903
BRIEF [O.A.] Schallmayer, Wilhelm Author: Schallmayer, Wilhelm Recipient: Haeckel, Ernst Dating: 27.03.1903
BRIEF OHNE UMSCHLAG Schallmeyer, Wilhelm Author: Schallmeyer, Wilhelm Recipient: Haeckel, Ernst Dating: 25.03.1903
TELEGRAMM Schallmayer, Wilhelm Author: Schallmayer, Wilhelm Recipient: Haeckel, Ernst Dating: 17.03.1903
BRIEF OHNE UMSCHLAG Schallmayer, Wilhelm Author: Schallmayer, Wilhelm Recipient: Haeckel, Ernst Dating: 25.03.1903