BRIEF [O.A.] Seewald, von G... [Konsul] Author: Seewald, von G... [Konsul] Recipient: Haeckel, Ernst Dating: 31.05.1873
BRIEF [O.A.] Seewald, von G... [Konsul] Author: Seewald, von G... [Konsul] Recipient: Haeckel, Ernst Dating: 22.10.1874
BRIEF [O.A.] Seewald, von G... [Konsul] Author: Seewald, von G... [Konsul] Recipient: Haeckel, Ernst Dating: 08.11.1874
BRIEF [O.A.] Seewald, von G... [Konsul] Author: Seewald, von G... [Konsul] Recipient: Haeckel, Ernst Dating: 15.02.1875
BRIEF [O.A.] Barry Author: Barry Recipient: Haeckel, Ernst Corporation: Cabinet du Khedive Dating: 21.03.1876
BRIEF [O.A.] Abayawira, M. P. Abraham Author: Abayawira, M. P. Abraham Recipient: Haeckel, Ernst Dating: 20.12.1899