BRIEF [O.A.] Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 02.11.1901
POSTKARTE Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 19.01.1906
BRIEF [O.A.] Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 14.02.1906
BRIEF [O.A.] Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 18.01.1908
BRIEF [O.A.] Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 26.02.1908
POSTKARTE Arnot, Raymond H... Author: Arnot, Raymond H... Recipient: Haeckel, Ernst Dating: 14.12.1908
BRIEF OHNE UMSCHLAG Doubleday, Russell Author: Doubleday, Russell Recipient: Scheffauer, Herman Corporation: Doubleday Page & Co., The Country Life Press Dating: 18.02.1916
BRIEF [O.A.] Dugan, Thomas Author: Dugan, Thomas Recipient: Haeckel, Ernst Corporation: John E. Dugan, Plumbing, Roofing and Haeting, Stoves and Gas Fixtures Dating: 28.01.1906