The black minstral doll may have been a racist symbol in the USA, but when he came to England through the drawing of Florence Kate Upton, he immediately became a hero. The English have not been slaves since the middle ages (400 years before Golly), Slavery had been abolished in the Empire for 100 years, and Britain has never had segregation laws, unlike the USA. The children had no pre-concieved ideas of slavery, and loved the new black toy. In the same way, a few years later, in a country that had abolished bear baiting and with no wild bears roaming the woods, they readily took to the Teddy Bear.
Gollywog was a made up name. WOG stands for Wiley Oriental Gentleman, and is an insult against Asians, not Africans. I think it was the alliteration within the word that children liked.
Within the Florence Kate Upton books, the Gollywogg quickly took over the series and had some remarkable adventures involving the high technolgy of the time, travelling by both motor car and airship. Children with no exposure to racism (in the USA sense) readily took to him as a much loved friend. Most children then had never met a black person, and still in Dorset schools there are children who only see people of other backgrounds on TV.
I believe that the children who took their golliwog to bed became the more tolerant members of British society, welcoming to people of other cultures. It was not the racist thugs who cuddled their gollies.
I also think that the political standpoint of Jim Crowe is given away by the sentence "travelling to such "exotic" places as Africa..." http://www.ferris.edu/news/jimcrow/golliwog/
Exotic means colourful, unusual and from abroad. It is used by people from the Indian sub continent about Britain. 100 years ago, and even now, Africa is exotic to most people in Europe and America, so why does Jim Crowe want to pretend that it isn't? I think that he is the sort of person who likes to find racism wherever he looks; should someone point out that Blyton has children wear SS badges he would think her a Nazi sympathiser!
The latest offering for young children being trailed on the BBC is a series where no one character looks like any human being you are ever likely to meet. There is no stereotyping of the number of eyes they may have, their bodyshape, and the more vibrant their colour the better. Is this really an improvement?
I have only read the re-writes of the Amelia Jane books, where the friendly, capable, brave leader of the toys who stands up to the bullying (white) rag doll has been changed from a gollywog to an action man (toy soldier). Yet another positive black character has been disposed with.