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Vintage Bell System / American Telephone & Telegraph Company technical training manual lot of 2 books.
The Application of Electricity and Magnetism to Transmission in the Telephone Plant
Includes:
Section I – Elementary Principles—Direct Currents
Copyright 1923 by American Telephone and Telegraph Company
Revised 1942
Printed in U.S.A.
Section II – Elementary Principles—Alternating Currents
Copyright 1923 by American Telephone and Telegraph Company
Reprinted 1940
Original Bell System instructional publications featuring technical text, diagrams and illustrations relating to electricity, magnetism, electrical circuits and telephone transmission.
Both retain their original printed soft covers with Bell System logos.
Condition: Vintage pre-owned condition with expected age-related wear. Covers show toning/discoloration, spotting, light staining/soiling and edge wear. Previous-owner writing/markings are lightly visible on the covers, including initials/marking on the spine of one volume. Interior pages appear generally clean and well preserved for their age. Please review all photos for exact condition.
Great early telecommunications collectible for a Bell System, AT&T, telephone, electrical engineering or industrial-history collection.
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