If reading William at age 75, and finding it has all the fun it had when the reader was 12 or 13, either the reader has frozen into childhood, or the book has a glorious and undying humour despite the changes brought about over fifty years. Naturally, I should prefer to think the latter is the case.
Unlike the other William books, this one describes a whole day in William's life, and gives us, as well, a deep and sympathetic look at William's long suffering family. Of all the William series, this has been a perennial favourite.