Masters of Space / Morse and the Telegraph; Thompson and the Cable; Bell and the Telephone; Marconi and the Wireless Telegraph; Carty and the Wireless Telephone

by Walter Kellogg Towers

TO

MY CO-LABORER AND COMPANION

BERENICE LAURA TOWERS

WHOSE ENCOURAGEMENT AND ASSISTANCE

WERE CONSTANT IN THE GATHERING

AND PREPARATION OF MATERIAL

FOR THIS VOLUME.