The first travel book I read (many years ago) was Peter Fleming's News from Tartary, and this is an account of the same journey, but written by Fleming's companion. It should not, however, be seen as a companion to Fleming's work, as it stands very comfortably (and assertively) on its own feet, as did Ella Maillart.
There are no journeys left in the world where one could write on setting out "do not expect to hear from us for six months, and do not worry until a year has passed", but that is what Maillart wrote on setting out on this journey.
Although she displays the sort of "stiff upper lip" one would expect from an adventurous women of her generation, there can be no disguising the danger inherent in such a journey at that time. This is not however an account of an adventure; it is the account of a journey undertaken to see what was there, and to report on it for people who could not expect to vist the area. In this goal Maillart succeeds admirably; her descriptions of the country and the people she encounters bring them fully to life and had me at least, yearning to vist what is still an inaccessable part of the world.
I envy Peter Fleming for having undertaken such a journey, and with Ella Maillart for company.