H.L. Mencken (1880–1956). The American Language. 1921.
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| Scott, Fred. N.: The Pronunciation of Spanish-American Words, Modern Language Notes, vol. vi. |
| Smalley, D. S.: American Phonetic Dictionary of the English Language; Cincinnati, 1855. |
| Smart, B. H.: A Practical Grammar of English Pronunciations; London, 1810. |
| Stearns, Edward J.: A Practical Guide to English Pronunciation for the Use of Schools; Boston, 1857. |
| Stratton, Clarence: Are You Uhmurican or American? New York Times, July 22, 1917. |
| ——: The New Emphasis of Oral English, English Journal, Sept., 1917. |
| Sweet, Henry: A Handbook of Phonetics; London, 1877. |
| ——: A History of English Sounds; London, 1876; Oxford, 1888. |
| ——: A Primer of Spoken English; Oxford, 1900. |
| ——: The Sounds of English; Oxford, 1908. |
| Vizetelly, Frank H.: A Desk-book of 25,000 Words Frequently Mispronounced; New York and London, 1917. |
| New York and London, 1917. |
| Wheeler, D. H.: Our Spoken English (in By-Ways of Literature; New York, 1883). |
| White, D. S.: American Pronunciation, Journal of Education, July 13, 1916. |
6. Regional Variations |
a. General Discussions |
| Bondurant, Alexander L.: Dialect in the United States, Dial, vol. xviii, p. 104. |
| Carpenter, W. H.: The Philosophy of Dialect, Modern Language Notes, vol. i, p. 64. |
| Combs, J. H.: Dialect of the Folk-Song, Dialect Notes, vol. iv, p. 311. |
| Eggleston, Edward: Folk-speech in America, Century, vol. x1viii, p. 867. |
| Emerson, Oliver F.: American Dialects, Modern Language Notes, vol. xii, p. 254. |
| ——: The American Dialects, Providence (R. I.) Sunday Journal, Oct. 16, 1892. |
| Hemple, George: American Dialects, Modern Language Notes, vol. ix, p. 124 and p. 310. |
| ——: Local Usage in American Speech, Dial, vol. xiv, p. 172. |
| ——: American Speech Maps, Dialect Notes, vol. iv, p. 315. |
| Mead, W. E.: The American Dialect Dictionary, Dialect Notes, vol. iii, p. 168. |
| Sheldon, E. S.: What Is a Dialect? Dialect Notes, vol.i, p.286. |
| Skeat, W. W.: English Dialects from the Eighth Century to the Present Day; Cambridge, 1911. |
| Wright, Joseph: An English Dialect Dictionary, 6 vols.; London, 1896-1905. |
| ——: The English Dialect Grammar; Oxford, 1905. |
| Wyld, H. C. K.: The Study of Living Popular Dialects and Its Place in the Modern Science of Language; London, 1904. |
b. New England |
| Allen, Frederic D.: Contributions to the New England Vocabulary, Dialect Notes, vol. i, p. 18. |
| Babbitt, E. H.: The Dialect of Western Connecticut, Dialect Notes, vol. i, p. 339. |