H.L. Mencken (1880–1956). The American Language. 1921.
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| Payne, James E. (and others): Style Book: a Compilation of Rules Governing Executive, Congressional and Departmental Printing, Including the Congressional Record; Washington, 1917. |
| Peck, Harry Thurston: The Collapse of Simplified Spelling, Bookman, vol. xxiv, p. 459. |
| ——: The Progress of “Fonetic Refawrm,” Bookman, vol. vi, p. 196. |
| Perrett, Wilfrid: Peetickay: an Essay Toward the Abolition of Spelling; Cambridge (England), 1920. |
| Riverside Press: Handbook of Style in Use at the Riverside Press, Cambridge, Mass.; Boston and New York, 1913. |
| Skeat, W. W.: Modern English Spelling, National Review, vol. x1viii, p. 301. |
| ——: On the History of Spelling; London, 1908. |
| Smith, Benjamin E.: The Future of Spelling Reform, Forum, vol. xxii, p. 367. |
| Smith, Logan Pearsall: A Few Practical Suggestions (in Tract No. III, Society for Pure English; Oxford, 1920). |
| Talman, Charles Fitzhugh: Accents Wild, Atlantic Monthly, Dec., 1915. |
| Vaile, E. O.: Our Accursed Spelling; Oak Park, III., 1901. |
| Webster, Noah: An American Dictionary of the English Language … 2 vols.; New York, 1828. |
| ——: The American Spelling Book … Being the First Part of a Grammatical Institute of the English Language …; Boston, 1783. |
| ——: The American Spelling Book … revised ed.; Sandbornton (N. H.), 1835. |
| ——: A Compendious Dictionary of the English Language; Hartford, 1806. |
| ——: A Dictionary of the English Language Compiled for the Use of Common Schools in the United States; Boston, 1807. |
| ——: A Dictionary of the English Language …; for Common Schools …; Hartford, 1817. |
| ——: Dissertations on the English Language …; Boston, 1789. |
| ——: The Elementary Spelling Book …; Phila., 1829. |
| ——: The Elementary Spelling Book … revised ed.; New York, 1848. |
| ——: A Grammatical Institute of the English Language … in Three Parts; Hartford, 1783. |
| ——: A Letter to the Hon. John Pickering on the Subject of His Vocabulary; Boston, 1817. |
| ——: The New American Spelling Book …; New Haven, 1833. |
8. Geographical Names |
| Ackerman, William K.: Origin of Names of Stations on the Illinois Central Railroad (in Early Illinois Railroads; Chicago, 1884). |
| Ames, Evelyn: English Place-Names in English Speech, English, Nov., 1920, p. 422. |
| Anon.: A History of the Origin of the Place-Names in Nine Northwestern States; Chicago, 1908. |
| ——: Nicknames of the States, Current Literature, vol. xxiv, p. 41. |