Colombia

1990 Nature Conservation WM: 7

1990 Flora

1990 Airmail – The 100th Anniversary of the Birth of Teresa Cuervo Borda, 1889-1976

1990 Airmail – Velez City Arms

1990 Nature Conservation WM: 7

1990 Airmail – The 50th Anniversary of Colombia National Radio

1990 Airmail – Presidential Summit, Cartagena

1989 Airmail – Christmas

1989 Airmail – The 170th Anniversary of the Beginning of the Liberation Campaign of Simon Bolivar

1989 Airmail – The 170th Anniversary of Creation of First Republic of Colombia and 168th Anniversary of its Constitution