Kevin Kidney has compiled vintage illustrations drawn in the 1950s for the publication Walt Disney Magazine. They are very cool and can be found at this Flickr virtual gallery. The pictures were auctioned off some years ago, and, until now, were rarely seen unless you owned one of the hard-to-find magazines or pictures. The pictures are numerous and were drawn by such greats as Herb Ryman, Art Riley, Paul Hartley, and Al Dempster, among others. Here's Kevin's blog, which has more information on this great photo gallery.
Source: Cartoon Brew