BRIEF [O.A.] Janes, Lewis G... Author: Janes, Lewis G... Recipient: Haeckel, Ernst Corporation: The Brooklyn Ethical Association Dating: 08.04.1892
BRIEF [O.A.] Wood, Wallace Author: Wood, Wallace Recipient: Haeckel, Ernst Corporation: University of the City of New York Dating: 04.03.1892
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 14.01.1892