>Nadya
>
>
>Made in America :an informal history of the English language in the United States
>
>and
>
>The mother tongue :English & how it got that way
>
>
>both by Bill Bryson
>
>Nick Mason

Found them on http://www.booksontape.com/search.cfm?author=683&ref=gotobrys but when I clicked to listen, nothing happened :( I'll try to search again...