Footage of 1974 Star Trek Con

Footage of one of the first Star Trek cons (1974?), VIEW HERE:
 https://archive.org/details/6388_Star_Trek_Convention_01_51_57_00

Ah, it's on youtube too, where people complain in the comments that there is no sound!

"No sound, therefore, by default, a useless post." 

"Is there supposed to be sound an dI'm doing something wrong, or is it just all silent? "

(When people talk nostalgically about the past, I always think, "Were you there? IT WAS SILENT!" 
Well, no, it wasn't, but home movies were.)

More info: Star Trek Conventions in the Seventies:
http://bogscifi.forumotions.net/t872-star-trek-conventions-in-the-seventies

Thanks, Michael, for the link!