This file is from a shared repository and may be used by other projects.
The description on its file description page there is shown below.
Summary
File information
Description
The control panel of the Harvard Cyclotron Laboratory circa 1950
Source
Harvard University Archives
Date
Author
This file has no author information, and may be lacking other information. Files should have a summary to inform others of the content, author, source, and date if possible. If you know or have access to such information, please add it to the file page.
Notify the uploader with: {{subst:add-author-I|1=HCL control rm 1950.jpg}}
This work is in the public domain because it was published in the United States between 1930 and 1977 inclusive, without a copyright notice. Unless the author has been dead for several years, it is not in the public domain in countries that do not apply the rule of the shorter term for US works. This includes Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, Switzerland, and other countries with individual treaties. See also further explanation.
PD-USPublic domain in the United States//en.wikipedia.org/wiki/File:HCL_control_rm_1950.jpg
If this file has problems with attribution, copyright, or is otherwise ineligible for Commons, then remove this tag and DO NOT transfer it; repeat violators may be blocked from editing.
Other Instructions
Endorse this file for transfer by adding |human=<your username> to this Template.
If this file is freely licensed, but otherwise unsuitable for Commons (e.g. out of Commons' scope, still copyrighted in the US), then replace this Template with {{Do not move to Commons|reason=<Why it can't be moved>}}
If you think that a local copy of this file should be retained, then replace this Template with {{Keep local|reason=<Why a local copy is needed>}}