The award is given annually to up to 55 students.

It is given annually, for the best first novel of the year.

Beginning with the 2009 award, it will be given annually.

It is given annually to the best science fiction short story.

It was given annually until 1958 and every two years thereafter.

Since 1975, the awards have been given annually, usually in June.

The award is not limited to Americans, and has been given annually since 1971.

The award has been given annually since 1991, except 2001, 2002, and 2009.

The award was established in 1994 and is given annually.

This award is given annually since 1999 to the team with the best fair play during the season.