1972 Airmail – Inter-American Lawyers’ Federation Congress, Quito 1972 Ecuadorian Statues 1972 Airmail – Ecuadorian Statues 1972 The 150th Anniversary of Battle of Pichincha 1972 Airmail – The 150th Anniversary of Battle of Pichincha 1972 Ecuadorian Handicrafts and Costumes 1972 Airmail – Ecuadorian Handicrafts and Costumes 1972 Airmail – Flowers 1972 Airmail – Oil Industry 1972 Airmail – Civic and Armed Forces Day 1972 The 150th Anniversary of Battle of Pichincha 1972 Airmail – The 150th Anniversary of Battle of Pichincha 1973 Inauguration of Satellite Earth Station, Chillotal WM: 4 1973 Airmail – The 25th Anniversary of U.N. Economic Committee for Latin America, C.E.P.A.L.

1976 Airmail – Archaeological Discoveries 1976 Archaeological Discoveries 1976 Flowers and Fruits Festival, Ambato 1976 Airmail – Flowers and Fruits Festival, Ambato 1976 Musical Celebrities 1976 Airmail – The 50th Anniversary of Lufthansa Airline 1976 Airmail – The 50th Anniversary of Lufthansa Airline 1976 Airmail – Post Office Building Project 1976 Airmail – The 50th Anniversary of Bolivarian Society 1976 Airmail – The 441st Anniversary of Guayaquil 1976 Airmail – The 3rd Pan-American Ministers’ Conference on Transport Infrastructure, Quito 1976 Airmail – The 3rd Pan-American Ministers’ Conference on Transport Infrastructure, Quito 1976 Airmail – The 10th Inter-American Construction Industry Congress, Quito 1976 Airmail – The 10th Inter-American Construction Industry Congress, Quito 1976 Airmail – The 200th Anniversary of American Revolution 1976 Airmail – The 100th Anniversary of the Birth of Dr. Hideyo Noguchi, Bacteriologist, 1878-1928 1976 Airmail – The 100th Anniversary of the Birth of Dr. Hideyo Noguchi, 1878-1928 1976 Airmail – Meeting of Agricultural Ministers of Andean Countries, Quito – Fluorescent Paper 1976 Airmail – Meeting of Agricultural Ministers of Andean Countries, Quito 1976 Airmail – Mariuxi Febres Cordero, South American Swimming Champion 1976 Airmail – President Luis Cordero Commemoration, 1833-1912 1977 Airmail – The 260th Anniversary of the Birth of Sister Catalina de Jesus Herrera, Religious Author, 1717-1795 1977 The 11th General Assembly of Technical Committees of the Pan-American Historical and Geographical Institute 1977 Airmail – The 11th General Assembly of Technical Committees of the Pan-American Historical and Geographical Institute 1977 Airmail – The 11th General Assembly of Technical Committees of the Pan-American Historical and Geographical Institute 1977 The 50th Anniversary of The Central Bank of Ecuador – Fluorescent Paper 1977 Airmail – The 50th Anniversary of The Central Bank of Ecuador – Gold Mask 1977 The 50th Anniversary of Guayaquil Rotary Club