Henry Sweet 
Sounds of English, an Introduction to Phonetics [PDF ebook] 

The object of this work is sufficiently shown in its title. It differs from my Primer of Phonetics 367) — to which it will serve as an introduction — not only in being more elementary, more systematically graduated, and more definitely based on the English sound-system, but in being better adapted for self-instruction in other respects as well. I hope it will be found specially useful to those who have to teach phonetics in connexion with elocution and modern languages.