Colombia

1989 Human Rights WM: 7

1989 The 45th Anniversary of the Death of Joaquin Quijano Mantilla, 1878-1944

1989 Airmail – Airline “AVIANCA”

1989 Airmail – America – Arts and Traditions of Native Americans

1989 Nature Conservation WM: 7

1989 Airmail – Anti-drugs Campaign

1989 Airmail – America – Arts and Traditions of Native Americans

1989 Airmail – Human Rights WM: 7

1989 Nature Conservation WM: 7

1989 The 170th Anniversary of Liberation Campaign