Flickr find of the week: a set of 151 photos taken at the 1967 Montreal Expo. User ninecormorants explains:

These photos were found on the street in Cambridge, MA - October 2004. They were originally arranged on scrapbook sheets with labels. I've attempted to arrange them in a sensible order, but this is the best I could do.

If I ever found anything like that on the street, I think I'd explode with joy. Dude, thank you so much for recognizing the historical worth of this scrapbook and taking the time to scan and upload each picture.