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Long-distance telephone pole line with open wire c. 1900. [1]
from the book Arthur Vaughn Abbott, Telephony–Part IV. The Construction of Aerial Lines, McGraw, New York (1903), page 4
Work is in the public domain, because of age.
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
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current | 02:23, 21 January 2022 | 1,000 × 1,400 (1.24 MB) | Kbrose ( talk | contribs) | Long-distance telephone pole line with open wire c. 1900.<ref>Arthur Vaughn Abbott, ''Telephony–Part IV. The Construction of Aerial Lines'', McGraw, New York (1903), page 4</ref> from the book Arthur Vaughn Abbott, ''Telephony–Part IV. The Construction of Aerial Lines'', McGraw, New York (1903), page 4 Work is in the public domain, because of age. |
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