Lost Worlds: What Have We Lost & Where Did it Go? by Michael Bywater is a lot of fun. An alphabetical romp through all manner of things that have gone, changed or otherwise been lost. I could tell you more, but it would spoil the fun. Buy or borrow a copy and enjoy.
He quotes Douglas Adams, by the way. That always gets bonus points from me.
 With some delightfully contrived headings such as Bus, Lost on the, Actually Not