Many here aren't old enough to remember Sambo's restaurant
but they used to be everywhere. I don't remember if they were called Black Sambo's or not, but the restaurant was based on the story of "Little Black Sambo," and they were eventually closed because of the negative connotations.
The original Sambo's is still operating in Santa Barbara, the little hero is not black and the story seems sweet. We ate there today and I picked up a set of Sambo's post cards, 7 illustrations and one which tells the story.
If anybody would like me to send them a post card, leave a message and I will be happy to do so.