The Hugo Award, also known as the Science Fiction Achievement Award,
is given annually by the World Science Fiction
Society (WSFS), as determined by nominations from and a popular vote of the
membership of WSFS. The first year the Hugo's were awarded was 1953, in general,
a Hugo Award given in a particular year is for work that appeared in the previous
calendar year. Note, however, that the winners for 1946, 1951, and 1954 were
retrospective awards given much later, in 1996, 2001, and 2004 respectively.