I think I might have put a link up for this before in my Richard Scarry post, but if you hadn't checked it out then, you really gotta do it. It's too hilarious. ... but also very interesting in terms of how norms of what is 'appropriate' for children (and for adults too as a matter of fact) are in constant flux.
There are several other images from Scarry posted on this flickr site where you can see the original and then the new political correct altered version after Scarry and the publisher got a bunch of letters from angry moms. The originals were all published in the early 60's. The altered editions started to appear in the late 60's around 67' 68'.