Konvensi Fiksi Ilmiah Sedunia ke-20, juga dikenal secara tak resmi sebagai Chicon III (atau Chicon II), diadakan pada 31 Agustus–3 September 1962, di Pick-Congress Hotel, Chicago, Illinois, Amerika Serikat.
↑Sturgeon, Theodore (2006). "Guest of Honor Speech". Dalam Resnick, Mike; Siclari, Joe (ed.). Worldcon Guest of Honor Speeches. ISFiC Press. hlm.89–101.
↑Lynch, Richard (March 29, 1996). "Chapter Eight: Worldcons of the 1960s". Fan History of the 1960s. Diarsipkan dari asli tanggal September 27, 2011. Diakses tanggal September 30, 2011.
Cromie, Robert (September 16, 1962). "The By-stander". Chicago Daily Tribune. hlm.E6. Diarsipkan dari asli tanggal 2012-11-06. Diakses tanggal March 12, 2011. Rocket expert Willy Ley zoomed in and out of town a few days ago [...] to address the 20th annual convention of the World Science Fiction Writers association.
Kemp, Earl (1963). The Proceedings: Chicon III. Advent:Publishers. Pemeliharaan CS1: Lokasi penerbit (link)