BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Haeckel, Agnes Dating: 13.08.1879
BRIEF OHNE UMSCHLAG Murray, John Author: Murray, John Recipient: Haeckel, Ernst Corporation: Challenger Office Dating: 23.12.1879
BRIEF OHNE UMSCHLAG Murray, John Author: Murray, John Recipient: Haeckel, Ernst Corporation: Challenger Office Dating: 03.03.1881
BRIEF OHNE UMSCHLAG Murray, John Author: Murray, John Recipient: Haeckel, Ernst Corporation: Challenger Office Dating: 01.03.1881
BRIEF OHNE UMSCHLAG Murray, John Author: Murray, John Recipient: Haeckel, Ernst Corporation: Challenger Office Dating: 15.03.1881
BRIEF OHNE UMSCHLAG Thomson, Charles Wyville Author: Thomson, Charles Wyville Recipient: Haeckel, Ernst Corporation: University Edinburgh Dating: 11.01.1878
BRIEF OHNE UMSCHLAG Thomson, Charles Wyville Author: Thomson, Charles Wyville Recipient: Haeckel, Ernst Corporation: University Edinburgh Dating: 02.11.1877
BRIEF OHNE UMSCHLAG Thomson, Charles Wyville Author: Thomson, Charles Wyville Recipient: Haeckel, Ernst Corporation: University Edinburgh Dating: 12.06.????