BRIEF [O.A.] Schulz Curtius, Alfred Author: Schulz Curtius, Alfred Recipient: Haeckel, Ernst Dating: 13.01.1886
BRIEF [O.A.] Chumley, James Author: Chumley, James Recipient: Haeckel, Ernst Corporation: Challenger Expedition Office Dating: 09.02.1886
BRIEF [O.A.] Traill, Geo... Will... Author: Traill, Geo... Will... Recipient: Haeckel, Ernst Dating: 02.10.1886
BRIEF [O.A.] Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 21.10.1886
BRIEF [O.A.] Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 03.01.1886
BRIEF [O.A.] Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 30.05.1886
BRIEF [O.A.] Rottenburg, Paul von Author: Rottenburg, Paul von Recipient: Haeckel, Ernst Dating: 07.10.1886
BRIEF [O.A.] Lendenfeld, Robert von Author: Lendenfeld, Robert von Recipient: Haeckel, Ernst Dating: 18.12.1886
BRIEF [O.A.] Lendenfeld, Robert von Author: Lendenfeld, Robert von Recipient: Haeckel, Ernst Dating: 09.11.1886