Colombia

2007 The 4th International Congress on Spanish Language, Cartagena of the Indies

2007 The 100th Anniversary of General Jose Maria Cordova Cadet School

1990 Airmail – Trans-Caribbean Submarine Fibre Optic Cable

1990 The 50th Anniversary of General Santander Police Cadets School

1990 Airmail – The 150th Anniversary of the Death of Francisco de Paula Santander, 1792-1840

1990 Airmail – The 150th Anniversary of the Death of Francisco de Paula Santander, 1792-1840

1990 The 150th Anniversary of the Death of Francisco de Paula Santander, 1792-1840

1990 Airmail – The 15th Anniversary of Stamps

1990 Nature Conservation WM: 7

1990 Airmail – The 2nd Iberian-American Theatre Festival, Bogota