LOC's Public Domain Archive
The objects in this archive are from Library of Congress - the nation’s first established cultural institution and the largest library in the world, with millions of items including books, recordings, photographs, maps and manuscripts in its collections. The Library provides Congress, the federal government and the American people with a rich, diverse and enduring source of knowledge to inform, inspire and engage them and support their intellectual and creative endeavors.
Disclaimer: A work of the Library of Congress is "a work prepared by an officer or employee" of the federal government "as part of that person's official duties." In general, under section 105 of the Copyright Act, such works are not entitled to domestic copyright protection under U.S. law and are therefore in the public domain. This website is developed as a part of the world's largest public domain archive, PICRYL.com, and not developed or endorsed by the Library of Congress, https://www.picryl.com
![[Three construction workers, suspended by ropes, with pneumatic hammers cutting into a wall or mountain, during construction of the Grand Coulee Dam, Columbia River, Washington]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MzYvMDEvMDEvdGhyZWUtY29uc3RydWN0aW9uLXdvcmtlcnMtc3VzcGVuZGVkLWJ5LXJvcGVzLXdpdGgtcG5ldW1hdGljLWhhbW1lcnMtY3V0dGluZy0xMDI0LmpwZw%3D%3D/320/387/jpg "[Three construction workers, suspended by ropes, with pneumatic hammers cutting into a wall or mountain, during construction of the Grand Coulee Dam, Columbia River, Washington]")
![[Three construction workers putting a coat of paint on a slanted wall of riveted-steel plates on the Hoover Dam spillway]](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTAvMTIvdGhyZWUtY29uc3RydWN0aW9uLXdvcmtlcnMtcHV0dGluZy1hLWNvYXQtb2YtcGFpbnQtb24tYS1zbGFudGVkLXdhbGwtb2Ytcml2ZXRlZC1lNzZiYWYtNjQwLmpwZw%3D%3D/40/49/webp "[Three construction workers putting a coat of paint on a slanted wall of riveted-steel plates on the Hoover Dam spillway]")
![[Construction worker with pneumatic hammer cutting into portion of dam wall]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMTMvY29uc3RydWN0aW9uLXdvcmtlci13aXRoLXBuZXVtYXRpYy1oYW1tZXItY3V0dGluZy1pbnRvLXBvcnRpb24tb2YtZGFtLXdhbGwtMmEzMjM2LTY0MC5qcGc%3D/40/48/webp "[Construction worker with pneumatic hammer cutting into portion of dam wall]")
![[Four men, three standing on top and one standing inside, riding on large casing section of pipe suspended by cable as it is moved into position by a crane, reservoir in the background during construction of the Grand Coulee Dam, Washington]](https://cache.getarchive.net/Prod/thumb/cdn18/L3Bob3RvLzIwMTkvMTEvMTUvZm91ci1tZW4tdGhyZWUtc3RhbmRpbmctb24tdG9wLWFuZC1vbmUtc3RhbmRpbmctaW5zaWRlLXJpZGluZy1vbi1sYXJnZS1jYXNpbmctOTk1ODg2LTY0MC5qcGc%3D/40/48/webp "[Four men, three standing on top and one standing inside, riding on large casing section of pipe suspended by cable as it is moved into position by a crane, reservoir in the background during construction of the Grand Coulee Dam, Washington]")
