1915_NELA_Convention_report_on_punch_cards.png
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Summary
Description 1915 NELA Convention report on punch cards.png |
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 Unknown author |
Licensing
Public domain Public domain false false |
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
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indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. PD-1923 Public domain in the United States //commons.wikimedia.org/wiki/File:1915_NELA_Convention_report_on_punch_cards.png |