File:1915 NELA Convention report on punch cards.png
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Summary
| Description |
English: NELA's 1915 Convention report demonstrated the use of punch cards as a way to manage a large number of electric accounts. |
| Date | |
| Source | 1915 National Electric Light Association annual convention report |
| Author | Unknown author |
Licensing
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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.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:42, 23 March 2019 | | 1,195 × 1,116 (711 KB) | Energynet | User created page with UploadWizard |
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