BRIEF OHNE UMSCHLAG Doubleday, Russell Author: Doubleday, Russell Recipient: Scheffauer, Herman Corporation: Doubleday Page & Co., The Country Life Press Dating: 18.02.1916
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 01.03.1916
BRIEF OHNE UMSCHLAG Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 11.03.1915
BRIEFABSCHRIFT Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 01.08.1916
BRIEFABSCHRIFT Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 04.04.1919
BRIEFABSCHRIFT Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 18.02.1918
BRIEFABSCHRIFT Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 10.07.1917
BRIEFABSCHRIFT Haeckel, Ernst Author: Haeckel, Ernst Recipient: Scheffauer, Herman Dating: 28.08.1916
