This title is unavailable in the amazon uk store as a kindle download, but is available from extralargeprint.org in several pdf sizes and an ascii txt file.
http://www.extralargeprint.org/Master-List.pdf and click on W
I havent downloaded it, as I have the print edition so cannot comment on the quality of the ebook editing.
I heartily recommend the book to anyone who has an interest in physics or what makes a joke work, or how thinking gets done. Or just as an autobiography.