Yes, I've read it three times. It is an excellent book.
Victor Mair recruited a number of experts to go examine the Caucasian mummies he discovered in the back-room of the Urumchi museum. Barber was one of those (textile) experts.
J. P. Malloy and Victor Mair wrote a book, The Tarim Mummies, about the same subject and is even better than Barber's book. As FReeper JimSEA said, "I couldn't put it down." I've read it 2-3 times too.
The Tarim Mummies:
Ancient China
and the Mystery of the
Earliest Peoples from the West
by J. P. Mallory and Victor H. MairThe Mummies of Urumchi
by Elizabeth Wayland Barber