BRIEF [O.A.] Norman, Alfred Merle Author: Norman, Alfred Merle Recipient: Haeckel, Ernst Dating: 27.01.1891
BRIEF [O.A.] Hanitsch, Richard Author: Hanitsch, Richard Recipient: Haeckel, Ernst Dating: 11.05.1887
BRIEF [O.A.] Hanitsch, Richard Author: Hanitsch, Richard Recipient: Haeckel, Ernst Dating: 27.11.1901
BRIEF [O.A.] Hanitsch, Richard Author: Hanitsch, Richard Recipient: Haeckel, Ernst Corporation: Raffles Museum Dating: 16.11.1901
BRIEF [O.A.] Noman, Alfred Merle Author: Noman, Alfred Merle Recipient: Haeckel, Ernst Dating: 27.01.1891
BRIEF OHNE UMSCHLAG Norman, Alfred Merle Author: Norman, Alfred Merle Recipient: Pohle, Franz Dating: 03.12.1891