[boost] [bimap] How to get started with bimap and boost 1.34.1?

Hello, I want to try out bimap alongside our current use of the 1.34.1 boost release. Google have led me to the boost vault where I found a bimap from 2007-06-04. I was under the impression that bimap was header only and ready to go when unzipped, but its documentation and examples refers to a file "boost/bimap.hpp" which I cannot find in the vault version. How can I get going with this? Best regards and thanks for any hints, Johan Franzén