There's a somewhat recent write-up on the Museum of Clean in Pocatello. It shows 16 photos of displays and individual vacuums in the museum.
http://cnet.com/pictures/crazy-cool-vintage-vacuum-cleaners
Hey, Rhazlitt, new member here. Is your Whirlwind a wireless friction vacuum? Are there holes in the bag? Is the rubber gone from the wheels? How are the bristles, and the mechanics? If its still available, I'm interested in discussing price.