Frost, J. (1846). The American speaker: Contaning numerous rules, observations, and exercises on pronunciation, pauses, inflections, accent, and emphasis; also, copious extracts in prose and poetry, calculated to assist the teacher, and to improve the pupil in reading and recitation. Philadelphia: Thomas, Cowperthwait & Co..

Frost, John. The American Speaker: Contaning Numerous Rules, Observations, and Exercises On Pronunciation, Pauses, Inflections, Accent, and Emphasis; Also, Copious Extracts in Prose and Poetry, Calculated to Assist the Teacher, and to Improve the Pupil in Reading and Recitation. Philadelphia: Thomas, Cowperthwait & Co., 1846.

Frost, John. The American Speaker: Contaning Numerous Rules, Observations, and Exercises On Pronunciation, Pauses, Inflections, Accent, and Emphasis; Also, Copious Extracts in Prose and Poetry, Calculated to Assist the Teacher, and to Improve the Pupil in Reading and Recitation. Philadelphia: Thomas, Cowperthwait & Co., 1846.