BRIEF [O.A.] Macdonald, Geo... E... Author: Macdonald, Geo... E... Recipient: Haeckel, Ernst Corporation: Zeitschrift: The Truth Seeker Dating: 10.02.1911
BRIEF [O.A.] Macdonald, Geo... E... Author: Macdonald, Geo... E... Recipient: Haeckel, Ernst Dating: 02.08.1911
BRIEF [O.A.] Macdonald, Geo... E... Author: Macdonald, Geo... E... Recipient: Haeckel, Ernst Dating: 31.08.1911
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