This is a beautiful book full of photos that trace the history of collapsible design.
That being said, I didn't realize until after I purchased it from a seller in the UK that it is the same book I already purchased from a seller in the US, only with a slightly different title, from a different publisher. Aside from the cover and title, these books are exactly the same.
It appears this book has been published by at least three different publishers, each with slightly different titles, so beware:
"Collapsibles: A Design Album of Space-saving Objects" by Thames & Hudson, Ltd.
"Collapsible: The Genius of Space-saving Design" by Diane Pub Co
"Collapsible: The Genius of Space-saving Design" by Chronicle Books