I just "stumbled" on these cool old bicycle posters. Apparently, these are the images for some online poster store. If you drill down to the root directory you get a retail site.
I was able to find 38 different posters. Some of these are very cool. To see them, I just substituted the number in the url in descending order (38, 37, 36, etc...). If there is a better way to view them I suppose someone will tell us if they know it.