BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 14.01.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 21.01.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 04.02.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 18.02.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 27.02.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 03.03.1905
BRIEF [O.A.] Georgy, Ernst August Author: Georgy, Ernst August Recipient: Haeckel, Ernst Dating: 27.03.1905