Praises be, P. L. Travers is not a one book author' Mary Poppins spread her fame, and I approached this ""serious book"" with fear and trembling, only to find that her sense of humor and her sense of people carries her through even an adventure in the Soviet cult. For this is not just another travel book on Soviet Russia. It is a tremendously entertaining and thoroughly human story of her own experiences, in which she saw more than Intourist expected her to see -- not only in her frank appraisal of the inadequacies of the ""miracles"" of efficiency, but in her sense of relative values. The material is based on letters written during the trip, but is not presented in the form of letters, but rather as running commentary, personal, amusing and refreshingly different. I thought I should like her after reading Mary Poppins; now I know it...The market? Wider than those interested in Russia. It should include the type of readers that took The Provincial Lady to their hearts -- and of course, the Mary Poppins fans.