THE BOOK IS A HIGH QUALITY REPRINT OF "THE HISTORY, THEORY AND PRACTICE OF THE ELECTRIC TELEGRAPH" BY GEORGE B. PRESCOTT, ORIGINALLY PUBLISHED BY TICKNOR AND FIELDS, BOSTON 1866. IT IS HARDCOVER, 500+ PAGES, AND ILLUSTRATED WITH DRAWINGS OF VARIOUS TELEGRAPH RELATED ITEMS. 24 CHAPTERS ON ALL KINDS OF USES OF TELEGRAPHY, ITS DEVELOPERS, INVENTORS.

THE TELEGRAPH KEY APPEARS TO BE GOLD PLATED AND WORKS FINE. IT IS THE SIMPLE TYPE WITHOUT A SHORTING LEVER.

THANKS FOR YOUR INTEREST.