This is a book by Ralph Leighton. It chronicles the adventures he and others had in trying to get to visit Tannu Tuva with Richard Feynman, the American Nobel prize-winning physicist.
Do you know where Tanni Tuva is located? I do, as I once saw it on a globe years ago. It was a country wedged between Russia and Mongolia, but Stalin took it over in the 1940's. Like the people in the book, exotic locales like this interest me, so I had to read this book.
The subtitle of the book is "Richard Feynman's Last Journey" - Feynman died before getting to Tuva. Sort of sad after all the trouble they went to to get there. The author did go, but it was very anti-climatic, as he barely said anything about the actual trip after pages on all the hoops they had to go through to get there.
If you read the book, it seems like Feynman was involved, but not nearly as much as the author and others mentioned in the book. Well, Feynman was famous, so I guess the subtitle helped attract attention to the book. In any case, the story is interesting and illustrates how weird and frustrating it was to deal with the old USSR - something quickly being forgotten perhaps.
To digress, I had a Russian penpal during communist rule, and it was interesting. I had to use registered mail (very expensive) to be sure he saw my letters. He actually defected to England, and I got to meet him there at the end of a business trip.
Getting back to the book review, I do recommend the book. It is like a time capsule for life so different, but not that long ago. Give it a look.