There is also a good biography of Pavlova, called just 'Anna Pavlova' by Oleg Kerensky. It was published in 1973 by Hamish Hamilton and at that time Kerensky was able to talk to some of Pavlova's 'girls' who were still around, so there are some first hand accounts of what it was like to be in her company. There is also a forword by Ashton. It might be worth looking libraries or searching second-hand book sites for a copy.There is (or was) also an organisation in the UK called The Pavlova Society started by John and Roberta Lazzarini who were involved with at least two books on Pavlova - mainly pictures with some text if I remember rightly. Anyway....good luck.