Modern Wonders, 1938: Automatic Telephone Exchange
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| Caption | Automatic Telephone Exchange. Illustration for one of a set of cigarette cards on the subject of Modern Wonders, issued by Churchman in 1938. |
|---|---|
| Creator | English Photographer (20th century) |
| Artwork medium | colour photograph |
| Credit | Look and Learn |
| Search stock images by keyword | Modern Wonders wonder 1930s Nineteen Thirties high technology technological developments science scientific progress early 20th century Automatic Telephone Exchange complex ingenious operation telephone number selectors heart complicated system switchgear duty caller ring bell engaged register answered electrical impulses 1938 |
| Stock image ref | Sizes available | Views |
|---|---|---|
| M698622 | Hi-res: 4,531 x 3,531 pixels Lo-res: 1,133 x 883 pixels |
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