Great stuff! The 19th century photos you can find really add a lot of context.
I found one though that shows that back in the latter part of the 1960's you needed to be ready for any eventuality. [0] This guy, who probably just glanced at the event listing and read it all wrong, brought his own mobile bed and rolling bedroom (background with the bubblegum lights) and finds himself needing to drum up interest amongst the attendees. Not a good salesman from the expressions.