Colombia

1948 Airmail – The 9th Pan-American Congress, Bogota WM: 2

1948 The 9th Pan-American Congress, Bogota WM: 2

1947 M. A. Caro, 1843-1909 and R. J. Cuervo, 1844-1911 WM: 2

1947 Jose Celestino Mutis, 1732-1808 and Jose Jeronimo Triana, 1828-1890 WM: 2

1947 Airmail – Pan-American Press Congress, Bogota

1947 The 4th Pan-American Press Congress, Bogota

1947 Colombian Orchids WM: 4

1947 Frame WM: 2

1946 The 5th Central American and Caribbean Games, Barranquilla WM: 4

1946 Joaquin Calcedo, 1773-1813 WM: 2