File:Quebec Bridge Construction 1917.JPG WikiZero

Summary

DescriptionQuebec Bridge Construction 1917.JPG	English: Photographs of the lifting of the center span of the Quebec Bridge in place, 1919, considered to be a major engineering achievement for the day.
Date	1919
Source	"Popular Mechanics" Magazine Dec 1919
Author	Unknown authorUnknown author

This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:

1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or

3. the creator died prior to January 1, 1972.

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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, 1929, 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.