BRIEF OHNE UMSCHLAG Hertwig, Richard Author: Hertwig, Richard Recipient: Haeckel, Ernst Dating: 02.11.1876
BRIEF OHNE UMSCHLAG Hertwig, Richard Author: Hertwig, Richard Recipient: Haeckel, Ernst Dating: 19.11.1876
BRIEF OHNE UMSCHLAG Strasburger, Eduard Author: Strasburger, Eduard Recipient: Haeckel, Ernst Dating: 11.10.1876
BRIEF [O.A.] Siciliani, Pietro Author: Siciliani, Pietro Recipient: Haeckel, Ernst Dating: 20.11.1876
BRIEF [O.A.] Schneider, Georg Heinrich Author: Schneider, Georg Heinrich Recipient: Haeckel, Ernst Dating: 10.12.1876
BRIEF [O.A.] Panceri, Paolo Author: Panceri, Paolo Recipient: Haeckel, Ernst Corporation: Gabinetto di Anatomia Comparata della R. Università di Napoli Dating: 26.02.1876
BRIEF [O.A.] Regalia, Ettore Author: Regalia, Ettore Recipient: Haeckel, Ernst Corporation: Museo Nazionale di Antropologia e di Etnologia Dating: 23.07.1876
BRIEF [O.A.] Jobutti, Ferdinando Author: Jobutti, Ferdinando Recipient: Haeckel, Ernst Corporation: Liceo Comunale Annibale Mariotti Dating: 20.04.1876