TELEGRAMM Carus, Paul; Hegeler Carus, Mary Author: Carus, Paul; Hegeler Carus, Mary Recipient: Haeckel, Ernst Dating: 16.02.1914
TELEGRAMM Ward, Percy H. Author: Ward, Percy H. Recipient: Haeckel, Ernst Corporation: Chicago Freethought Society Dating: 16.02.1914
TELEGRAMM Osborn, Henry Fairfield Author: Osborn, Henry Fairfield Recipient: Haeckel, Ernst Dating: 16.02.1914
BRIEF OHNE UMSCHLAG Gross, Samuel D. Author: Gross, Samuel D. Recipient: Haeckel, Ernst Dating: ??.??.1876
GRUSSADRESSE Berg, John [et al.] Author: Berg, John [et al.] Recipient: Haeckel, Ernst Corporation: Repraesentanten des Finnischen Volkes in Chicago Dating: 24.06.1910
GRUSSADRESSE Wakeman, Thaddeus Burr Author: Wakeman, Thaddeus Burr Recipient: Haeckel, Ernst Corporation: Amerikanische Monisten Dating: 12.09.1911
BRIEF OHNE UMSCHLAG Ward, Percy H. Author: Ward, Percy H. Recipient: Haeckel, Ernst Dating: 18.02.1914
BRIEF OHNE UMSCHLAG Craps, John T. Author: Craps, John T. Recipient: Haeckel, Ernst Corporation: Rationalist Society of Columbia Dating: 11.01.1912
BRIEF OHNE UMSCHLAG Craps, John T. Author: Craps, John T. Recipient: Haeckel, Ernst Corporation: Rationalist Society of Columbia Dating: 11.01.1912