The 10th World Science Fiction Convention was held on Labor Day weekend from August 30 - September 1, 1952, at the Morrison Hotel in Chicago, Illinois. Unlike most Worldcons before or since, it never had an official name other than "10th World Science Fiction Convention," as both the convention's issued membership card and program book clearly stated. Of all Worldcons to date, only the 11th in Philadelphia, 1953, shared this same lack of a formal convention title. The phrases "Tenth Anniversary World Science Fiction Convention" (TAWSFiC) and "Tenth Anniversary Science Fiction Convention" (TASFiC, likely a simple linotype error, as "World" is missing) were each used in some of this Worldcon's pre-convention materials; but the phrase's acronyms "TAWSFiC" and "TASFiC" were never used official