Update to John Barham's Journey through the Crimean War

Just added the sources page for John Barham's Journey through the Crimean War. An excellent resource in its own right with links to all the books which are available 'full view' online at the Internet Archive (archive.org), Google Books, the Gutenberg Project and elsewhere. Find it at cwrs.russianwar.co.uk/cwrs-R-jbarham-sources.html