H. L. Mencken,
The American Language — Vulgar Pronunciation
(1919)
“ No single investigator can examine the speech of the whole country; for that business a pooling of forces is necessary. But meanwhile it may be of interest to set forth a few provisional ideas.At the start two streams of influence upon vulgar American pronunciation may be noted, the one an inheritance from the English of the colonists, and the other arising spontaneously within the country, and apparently much colored by immigration. The first influence, it goes without saying, is gradually dying out. Consider, for example, the pronunciation of the diphthong oi. ”
