I knew about this updated version of a Richard Scarry book: http://www.flickr.com/photos/kokogiak/sets/1425737/
But I just found this update that Hillary Lang posted back in May of 2005-- a 1976 page from Cars and Trucks, paired with the original from 1951: http://weewonderfuls.typepad.com/wee_wonderfuls/2005/05/look_what_i_fou.html
Anyone remember when I posted about Cars and Trucks, an old Golden Book with illustrations by Richard Scarry? And there was this page that stuck out like a sore 70s thumb in the middle of an all 50s book.
It's really hard to look at this Before and After and not think of Mad magazine.