I'd seen this on eBay forever, and when it dropped in price, decided to go for it. I had assumed there were geisha dancing, but it seems it's a dance troupe and not geisha. Still, the images are interesting, and the drawings of the costumes are quite pretty.
I tried to find more information about the dancing troupe online, but couldn't find much. There's a bit of history information about the fair itself - seems it wasn't sanctioned by the official group and thus no major countries were present (there was a fair coming up in Montreal in a few years).
This comment, “Watch a Japanese troupe dance to exciting new rhythms combining traditional music and jazz." came from the 1965 National Geographic.
This page has a small blurb about the Japanese pavilion, which looks like the wall of a moat that surrounds a castle.
This site also has a little bit of info about the pavilion, along with a picture of the annex and a pic of the dancers (looks like awa odori).
Critical Past's website has a few videos of the exhibition and the Japanese pavilion:
video 1 and video 2.
Other links and videos about the 1964 World's Fair in general.
I've uploaded all the images to photobucket, in their own gallery. I scanned them in; the booklet was just the size of my scanner, thank goodness. I was worried it would be a bit too big. The program has drawn images of some of the costumes, pictures in black and white and color, the names of all the dancers, an intro from the organizer, and information about each of the dances they performed and who performed them.
The 1964 World's Fair Sakura Odori Program gallery.
Here's a preview (clickable thumbnails):