A Modern English grammar on historical principles is a seven-volume grammar of English written by Otto Jespersen.
The first volume ("part"), Sounds and Spellings, was published in 1909; two through five were on syntax; six was on morphology; and seven returned to the topic of syntax.
[1]: 1766 In 1989 Randolph Quirk called the work "a continual source of inspiration and value".
[2] In 2002 Rodney Huddleston and Geoffrey K. Pullum called it "One of the most complete grammars for English in the first half of the twentieth century", one "which every serious English grammarian consults on a regular basis".
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