[en] [Gutenberg 57813] • How to Master the Spoken Word / Designed as a Self-Instructor for all who would Excel in the Art of Public Speaking Chicago, A. C. McClurg & company
[en] [Gutenberg 10639] • Phrases for Public Speakers and Paragraphs for Study Public Domain Books
[en] [Gutenberg 17476] • Talks on Talking IndyPublish.com
[en] [Gutenberg 12200] • Delsarte System of Oratory Forgotten Books
[en] Listening in the Field, Recording and the Science of Birdsong The MIT Press