There ar a number of "Black Boy" pubs around here which had pictures of a woman scubbing a black child in a tub.....
Traditional story of a seafarers wife who had been "less than faithful" when her husband was at sea. The offspring was black, hence the scrubbing the child to convince the returning spouse that it was his and concieved during the last shore leave.
There are often complaints about racism, but these are counter argued in that it is a traditional morality tale.