BRIEF OHNE UMSCHLAG Carter, Henry G. Author: Carter, Henry G. Recipient: Haeckel, Ernst Corporation: Carter & Sons Dating: 30.06.1911
BRIEF [O.A.] Boehm, T. W. Author: Boehm, T. W. Recipient: Haeckel, Ernst Corporation: T. W. Boehm Music Teacher Dating: 18.04.1906
BRIEF [O.A.] Stephenson, Mildred Author: Stephenson, Mildred Recipient: Haeckel, Ernst Dating: 28.04.1905
BRIEF [O.A.] Semon, Richard W... Author: Semon, Richard W... Recipient: Haeckel, Ernst Dating: 10.08.1891
BRIEF [O.A.] Semon, Richard W... Author: Semon, Richard W... Recipient: Haeckel, Ernst Dating: 11.09.1891
BRIEF [O.A.] Semon, Richard W... Author: Semon, Richard W... Recipient: Haeckel, Ernst Dating: 04.11.1891