File:Second Potomac Aqueduct Bridge.JPG

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Summary

DescriptionSecond Potomac Aqueduct Bridge.JPG	English: Second version of Potomac Aqueduct Bridge. Taken between 1868 and 1877.
Date	1868 to 1877
Source	https://www.loc.gov/pictures/item/dc0967.photos.025240p/
Author	Historic American Engineering Record/Historic American Buildings Survey, U.S. Department of the Interior.
Other versions	Image cropped from original to remove extraneous negative borders and markings.

Licensing

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1931, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
	This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.