The above's probably been my favorite image for the last couple of years.  From a Sunkist ad booklet from the 30s.  What so draws me to it (other than my larger love of vintage food illustration) I don't know, but I've never found anything so luscious.  Luckily it's part of my collection, which I intend to share here.  Here's the front and back of the same booklet, which would have been given away free in supermarkets, which's part of what amazes me.