Argentina

1940 The 100th Anniversary of the Postage Stamps – Philatelic Exhibition, Cordoba WM: 9

1940 The 50th Anniversary of the Pan American Union WM: 9

1939 Fonopost-Experimental Postal Service WM: 9

1939 The 1st Pan-American Housing Congress WM: 9

1939 International Stamp Exhibition – Universal Postal Congress, Buenos Aires

1939 International Stamp Exhibition – Universal Postal Congress, Buenos Aires

1939 Universal Postal Congress, Buenos Aires WM: 9

1939 Last Trip of the Schoolship “Presidente Sarmiento” WM: 9

1938 The 50th Anniversary of the Death of President Faustino Sarmiento, 1811-1888 WM: 9

1936 Inter-American Congress for the Maintenance of Peace, Buenos Aires WM: 9