BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 30.01.1878
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 10.09.1879
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 05.06.1883
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 29.01.1890
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 16.11.1891
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 14.01.1892
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 04.03.1893
BRIEF [O.A.] Ward, Lester F... Author: Ward, Lester F... Recipient: Haeckel, Ernst Dating: 11.11.1904