7th World Science Fiction Convention
The 7th World Science Fiction Convention, also known as Cinvention, was held September 3–5. 1949, at the Hotel Metropole in Cincinnati, Ohio, United States.
The Guests of Honor were Lloyd A. Eshbach and Ted Carnell. Don Ford carried out the duties of Chairman, but was officially Secretary-Treasurer; Charles R. Tanner had the honorary title of Chairman. Total attendance was approximately 190; noteworthy attendees included Forrest J. Ackerman, Hannes Bok, Lester del Rey. Vince Hamlin. Sam Moskowitz, Rog Phillips, Milton Rothman, "Doc" Smith, and George O. Smith.