Brazil

1957 The 150th Anniversary of the Brazilian Navy WM: 17

1957 Inauguration of Sarapui Radio Station WM: 17

1957 The 100th Anniversary of the Death of Auguste Comte, 1798-1857 WM: 16

1957 The 100th Anniversary of the City of San Carlos WM: 16

1957 Airmail – United Nations Day WM: 16

1957 The 2nd Anniversary of the Women’s World Basketball Championships

1957 The 9th Anniversary of the Spring Games, Rio de Janeiro

1957 The 300th Anniversary of the Emancipation of Santo Antonio Province WM: 16

1957 Airmail – The 100th Anniversary of the Birth of Lord Baden-Powell, 1857-1941

1957 The 25th Anniversary of the Sao Paulo Revolutionary Government WM: 16