1949 The 1st Forestry Congress, Bogota WM: 4 1949 The 50th Anniversary of the Death of Francisco Javier Cisneros, 1836-1898 1950 Airmail – Stamps for the Airline LANSA 1950 Airmail – Previous Issues Overprinted A = “Avianca” 1950 Airmail – Previous Issues Overprinted L = “Lansa” 1950 The 75th Anniversary of U.P.U. – Inscribed “1874 UPU 1949” – Orchids and Cityscapes 1950 The 75th Anniversary of U.P.U. – Inscribed “1874 UPU 1949” – Orchids and Cityscapes 1950 Airmail – The 75th Anniversary of U.P.U. – Inscribed “1874 UPU 1949” – Orchids and Cityscapes 1950 Antonio Baraya, 1768-1816 1950 Local Motives

1954 Airmail – Stamps for Domestic Airmail 1954 The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Airmail – The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Airmail – The 300th Anniversary of Senior College of Our Lady of the Rosary, Bogota 1954 Inauguration of Paz del Rio Steel Plant 1954 Airmail – Inauguration of Paz del Rio Steel Plant 1954 Airmail – Previous Issue Overprinted “A” 1955 The 100th Anniversary of the Birth of Jose Marti, 1853-1895 1955 Airmail – The 100th Anniversary of the Birth of Jose Marti, 1853-1895 1955 Colombian Forces in Korea 1955 Airmail – Colombian Forces in Korea 1955 Greater Colombia Merchant Marine Commemoration 1955 Airmail – Greater Colombia Merchant Marine Commemoration 1955 Greater Colombia Merchant Marine Commemoration 1955 Airmail – Greater Colombia Merchant Marine Commemoration 1955 Airmail – Stamps for Domestic Airmail and 100th Anniversary of the Birth of Marco Fidel Suarez, 1855-1927 1955 Local Motives 1955 Airmail – Local Motives 1955 The 50th Anniversary of Rotary International 1955 Airmail – The 50th Anniversary of Rotary International 1955 The 7th Postal Union Congress of the Americas and Spain 1955 Airmail – The 7th Postal Union Congress of the Americas and Spain 1955 Express Domestic Airmail – The 7th Postal Union Congress of the Americas and Spain