The Retro-Hugos are Hugo-like awards given retroactively to works and people eligible 50 years prior to a current World SF Convention. They've been awarded only three times, in 1996, in 2001, and in 2004.

Who	Members of the World SF Convention.
Dating convention	Year following year of eligibility; e.g., the awards presented in 1996 were called the 1946 Retro Hugo Awards.
Issues and controversies	Many are skeptical of the validity, or point, of determining nominations and winners 50 years after the fact. Current reputations influence the results far more than analysis of historical importance.
Process	Voting for the Retro Hugos parallels rules and procedures for the Hugo Awards.