BRIEF OHNE UMSCHLAG Doubleday, H. S. Author: Doubleday, H. S. Recipient: Haeckel, Ernst Dating: 20.10.1907
BRIEF OHNE UMSCHLAG Doubleday, H. S. Author: Doubleday, H. S. Recipient: Haeckel, Ernst Dating: 22.03.1909
BRIEF [O.A.] Moore, A... Bramlay Author: Moore, A... Bramlay Recipient: Haeckel, Ernst Corporation: The Northern Club Dating: 06.04.1914
BRIEF [O.A.] Mc Cormick, R... S... Author: Mc Cormick, R... S... Recipient: Haeckel, Ernst Corporation: The Algoma Central and Hudson Bay Railway Co. Dating: 26.08.1914
BRIEF [O.A.] Mc Cormick, R... S... Author: Mc Cormick, R... S... Recipient: Haeckel, Ernst Corporation: The Algoma Central and Hudson Bay Railway Co. Dating: 27.05.1915
BRIEF [O.A.] Winder, Christopher Author: Winder, Christopher Recipient: Haeckel, Ernst Dating: 05.09.1908
BRIEF [O.A.] Scott, Bryce D... Author: Scott, Bryce D... Recipient: Haeckel, Ernst Corporation: Intercolonial Railway of Canada Dating: 07.04.1896
BRIEF [O.A.] Schwatka, Frederick Author: Schwatka, Frederick Recipient: Haeckel, Ernst Corporation: Headquaters Department of the Columbia Dating: 24.01.1884