A Dictionary of Americanisms
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A Dictionary of Americanisms on Historical Principles is a dictionary of English words and phrases that originated in the United States. The Dictionary was edited by Mitford Mathews and was published in 1951 by University of Chicago Press.
The work should not be confused with John Russell Bartlett's work, Dictionary of Americanisms: A Glossary of Words and Phrases, Usually Regarded as Peculiar to the United States, first published in 1848.