books.google.co.ukhttp://books.google.co.uk/books/about/A_Narrative_of_the_March_and_Operations.html?id=FdUWAAAAQAAJ&q=valley&utm_source=gb-gplus-shareA Narrative of the March and Operations of the Army of the Indus, in the Expedition to Affghanistan in the Years 1838-1839
