File:Here is the "inside workings" of the automatic telephone, located at the Smithsonian Institution, Wash., being operated by Carl Mitman. The electro magnets do all the work. The current LCCN2016887332.jpg
Original file (9,984 × 7,188 pixels, file size: 9.23 MB, MIME type: image/jpeg)
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Summary[edit]
DescriptionHere is the "inside workings" of the automatic telephone, located at the Smithsonian Institution, Wash., being operated by Carl Mitman. The electro magnets do all the work. The current LCCN2016887332.jpg |
English: Title: Here is the "inside workings" of the automatic telephone, located at the Smithsonian Institution, Wash., being operated by Carl Mitman. The electro magnets do all the work. The current necessary to operate these magnets is supplied by 32 dry batteries located in the box at the left. The motor generator is along side. This machine is capable of operating 50 telephones
Abstract/medium: 1 negative : glass ; 5 x 7 in. or smaller |
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Date | |||
Source |
Library of Congress
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Author | Harris & Ewing, photographer | ||
Permission (Reusing this file) |
No known restrictions on publication. For more information, see Harris & Ewing Photographs - Rights and Restrictions Information https://www.loc.gov/rr/print/res/140_harr.html
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Collection InfoField | Harris & Ewing Collection | ||
Notes InfoField |
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Part of InfoField | harris & ewing collection · prints and photographs division | ||
Subject InfoField | united states · glass negatives | ||
Location InfoField | united states | ||
Place InfoField | United States | ||
Genre InfoField | Glass negatives |
Licensing[edit]
Public domainPublic domainfalsefalse |
This work is from the Harris & Ewing collection at the Library of Congress. According to the library, there are no known copyright restrictions on the use of this work. |
Public domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:20, 20 June 2018 | 9,984 × 7,188 (9.23 MB) | Fæ (talk | contribs) | LOC upscale 1,024 × 737 → 9,984 × 7,188 | |
13:05, 28 March 2018 | 1,024 × 737 (296 KB) | Fæ (talk | contribs) | Library of Congress Harris & Ewing Collection 1924 LCCN 2016887332 jpg # 34,425 / 41,540 |
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