Elocution
Free to read here, from Project Gutenberg.
The speaker's ideal entertainments
New Century Speaker and Writer: Being a Standard Work on Composition and Oratory
Delsarte System of Oratory
1001 Questions and Answers on Orthography and Reading
The Voice and Spiritual Education
Elocution Simplified
Evolution of Expression, Volume 2—Revised
Vocal Expression: A Class-book of Voice Training and Interpretation
The Canadian Elocutionist
Public Speaking: Principles and Practice
A Discourse Being Introductory to his Course of Lectures on Elocution and the English Language (1759)
Evolution of Expression — Volume 1