A photo of the Masquerade from WorldCon 1961, featuring Stu Hoffman dressed as some kind of alien in the foreground, and Sylvia Dees in some kind of chainmail mini dress in the background. They are surrounded by other people in regular 1961 clothing.

It's Cosplay ThrowBackThursday! Taking the Wayback Machine to WorldCon 1961 (aka SeaCon). Stu Hoffman and Sylvia Dees; photo by Ben Jason. Most cosplay at the time was based on SF/F novels & short stories! #cosplaythrowbackthursday #cosplayhistory #worldcon #1960scosplay #tbt

A black and white photo from Seacon (Worldcon 1961). Two men in costume (alien? ancient Greek?) grasp hands in the foreground, while a third man stands in the background, hand on hip.

It's Cosplay #ThrowbackThursday! This week, we visit Seacon aka WorldCon 1961! Unknown fans at the costume show. Photo by Bill Warren. #cosplay #tbt #CosplayHistory #1960sCosplay #60sCosplay #WorldCon1961 #billwarren #seacon #masquerade #scifi #sff #FandomHistory #WorldCon #fandom