1980 Airmail – Pichincha Provincial Council
1980 Airmail – Pichincha Provincial Council
Ecuador
1980 Airmail – Visit of King and Queen of Spain
1980 Airmail – Visit of King and Queen of Spain
1980 Airmail – Chiefs of the Indo-American Indian Tribes
1980 Airmail – Chiefs of the Indo-American Indian Tribes
1980 Airmail – Chiefs of the Indo-American Indian Tribes
1980 Airmail – Chiefs of the Indo-American Indian Tribes
1980 Chiefs of the Indo-American Indian Tribes
1980 Chiefs of the Indo-American Indian Tribes
1980 Airmail – The 200th Anniversary of the Birth of Jose Joaquin de Olmedo, Physician
1980 Airmail – The 200th Anniversary of the Birth of Jose Joaquin de Olmedo, Physician
1980 The 200th Anniversary of the Birth of Jose Joaquin de Olmedo, Physician
1980 The 200th Anniversary of the Birth of Jose Joaquin de Olmedo, Physician
1979 Airmail – Inauguration of CIESPAL, Ecuadorian Institute of Engineers, Building WM: 4
1979 Airmail – Inauguration of CIESPAL, Ecuadorian Institute of Engineers, Building WM: 4