We asked Bob Greenman, the author and educator we interview in this week's "Teachers at Work" feature, to recommend books about vocabulary. Here are his picks:

America in So Many Words, by Allan A. Metcalf and David K. Barnhart. "Year by year, the stories behind significant American words like cookie (1703), squatter (1788), hobo (1847), bathtub (1870), muckraker (1906), jukebox (1939), duh ( 1963) and newbie (1993)."

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