This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionMicrocard AEC report.png
English: A microcard, a type of opaque microformat (or "microopaque"), showing a translation of a paper published by the US Government in the Atomic Energy Commission technical translation report series. Photograph of a card held in the MIT Libraries collections
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Captions
A microcard, showing a US Government produced report