BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 21.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 22.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Corporation: Gábor R. Gabriel Verlag Wien Dating: 24.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 27.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 28.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 29.12.1913
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Corporation: Gábor R. Gabriel Verlag Wien Dating: 04.01.1914
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Corporation: Gábor R. Gabriel Verlag Wien Dating: 04.01.1914
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Corporation: Gábor R. Gabriel Verlag Wien Dating: 05.01.1914
BRIEF [O.A.] Gabriel, Gábor Raimund Author: Gabriel, Gábor Raimund Recipient: Haeckel, Ernst Dating: 06.01.1914