Ian Frazier has published an account of his trip in The New Yorker magazine. I am urging everyone to get copies of the August 3 and the August 10/17 issues of the magazine and enjoy this extremely well-written, interesting and informative article.
You can read an abstract of part one here and of part two here.
Frazier's delightful sketches from the trip are not available in the print edition. However, they can be enjoyed with his narration here.
Just saw this now What a pity. I'd love to travel to that part of the world. I've been to Russia once and thought it was a fascinating country. What I'd love to do is take the TransSiberian all the way to Vladivostok - in winter.