Here are some cool photos from Cons of yesteryear thanks to Los Angeles Science Fantasy Society (via The Mary Sue). These images are from the Westercon convention in 1980. I love the pics. Some are way out there and hard for me to guess, while others are really clear.
Check them out below and share your thoughts. One thing is for sure, Cosplay has come a long way since the 80's:
Source: The Mary Sue (http://www.themarysue.com/convention-photos-from-the-1980s/)