BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Dating: 09.11.1873
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Dating: 20.08.1873
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Dating: 27.07.1878
BRIEF OHNE UMSCHLAG Haeckel, Agnes Author: Haeckel, Agnes Recipient: Rohlfs, Gerhard Dating: 23.08.1873
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Dating: 16.10.1876
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Dating: 10.12.1883
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Corporation: Zoologisches Institut Dating: 19.05.1884
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Rohlfs, Gerhard Corporation: Zoologisches Institut Dating: 01.06.1894