This image is the cover for the book William -- The Fourth, Classics To Go

William -- The Fourth, Classics To Go

There is only one William. The loveable imp and his band of Outlaws have been harassing his unfortunate family and delighting hundreds of thousands of readers for years. Here, William invents a water race where competitors have to run with a mouth full of water, without swallowing it or spitting it out. It's just a shame he doesn't have time to think before speaking to (and drenching!) Mrs. Adolphus Crane during the race! (Goodreads)

Richmal Crompton

Richmal Crompton Lamburn (15 November 1890 – 11 January 1969) was a popular English writer, best known for her Just William series of books, humorous short stories, and to a lesser extent adult fiction books.

OTB ebook