A 1924 New York Times story on “The 4,000 Most Essential Words” a foreigner must know to become a US citizen. (It’s on page 140. From the ms: “Milliner, million, mind”.) Why do we have pom-pom balls on our winter hats? A slightly different Fire and Fury becomes a bestseller. The current use of “Clive” in English-language books, according to Google’s ngram, is slightly below the historical mean. An analysis finds that Haskell is disproportionately a language coders learn for fun on the weekend. “Blattidae”, “chandala”, “chrestomathy”: H.L. Mencken had an epically wide-ranging vocabulary. Ophthalmologists who were trained in art observation became better at their jobs.