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1966 Airmail – The 25th Anniversary of Colombian Automobile Club
1966 Airmail – The 25th Anniversary of Colombian Automobile Club
1965 Airmail – “History of Colombian Aviation”
1965 Airmail – “History of Colombian Aviation”
1965 Airmail – The 100th Anniversary of Colombian Telegraphs
1965 Airmail – The 100th Anniversary of Colombian Telegraphs
1965 Airmail – The 5th Philatelic Exhibition, Bogota
1965 Airmail – The 5th Philatelic Exhibition, Bogota
1965 Airmail – The 100th Anniversary of I.T.U.
1965 Airmail – The 100th Anniversary of I.T.U.
1965 Airmail – Manuel Mejia Commemoration
1965 Airmail – Manuel Mejia Commemoration
1964 Airmail – Tolima Conservatory Commemoration
1964 Airmail – Tolima Conservatory Commemoration
1964 Airmail – The 15th Anniversary of Declaration of Human Rights
1964 Airmail – The 15th Anniversary of Declaration of Human Rights