The atlas of North American English
by William Labov, Sharon Ash, Charles Boberg
AmericanismsCanadianismsDialectsEnglish languageVariationsVariationGrammar & vocabularyPhonetics, phonology, prosody (speech)
Accompanying CD-ROM and website contain ... "a data base with measurements of more than 100,000 vowels and mean values for 439 speakers; extended sound samples of all North American dialects; multimedia material for further study; multimedia applications to enhance classroom presentations"--P. [4] of cover.
Writing a summary for young readers…
For young readers
Book data: Open Library