This is my memory of a very large convention from the very early 1970s. To do it I downloaded three photos I found on the internet which suggested the ballroom, but most of it is just the way I remember it-- hundreds of old boys and young men, no comic boxes but stacks of comics and comics in makeshift boxes, scraggly hair, clothes from the 1950s both in style and age, Maggie, Paty and the Vartinoff sisters and people having fun in their own way. It is sort of a "Where's Waldo" for comic fans. If I get a bit of time I will colour it.
That's supposed to be a young Ron Kasman second from the lower left corner and up a bit, not the one with the facial hair-- the one with the acne. I left out the goitre and the hare lip. I would have been seventeen.