The Telephone and Telephone Exchanges: their Invention and Development

Abstract

This work, with index, runs 558 pages and was first published in 1915 by Longmans, Green, and Co., in London and New York. Chapter 11 is about "The Microphone." Chapter 22 deals with "The Telephone and Governments," and was written before World War I began in August, 1914. Appendix A (pp. 530-38) has data on development in cities and countries worldwide as of January 1, 1914.