Mary Norris in The New Yorker:
Among the many books about punctuation, precious few are devoted to a single mark. There’s “On the Dot,” by the Brothers Humez, which celebrates the period, or full stop; “Semicolon,” a thoughtful treatise by Cecelia Watson; and “Fucking Apostrophes,” a jewel of a book by Simon Griffin. The hyphen, which may not technically qualify as a punctuation mark, because it operates at the level of the word rather than the sentence—it doesn’t make you pause (though it may give you pause)—has inspired not one great book but two: “Meet Mr. Hyphen (And Put Him in His Place),” a classic by Edward N. Teall, published in 1937, and “Hyphen,” by Pardis Mahdavi, which came out in 2021.
More here.