BRIEF [O.A.] Rovirosa, F... Lacroix Author: Rovirosa, F... Lacroix Recipient: Haeckel, Ernst Dating: 02.03.1909
BRIEF [O.A.] Rovirosa, F... Lacroix Author: Rovirosa, F... Lacroix Recipient: Haeckel, Ernst Dating: 01.??.1909
POSTKARTE Rovirosa, F... Lacroix Author: Rovirosa, F... Lacroix Recipient: Haeckel, Ernst Dating: 02.03.1909
POSTKARTE Rovirosa, F... Lacroix Author: Rovirosa, F... Lacroix Recipient: Haeckel, Ernst Dating: 16.02.1909
BRIEF [O.A.] Rovirosa, F... Lacroix Author: Rovirosa, F... Lacroix Recipient: Haeckel, Ernst Dating: 29.09.1909