In addition to photographs whose copyrights have expired, there are other groups of photographs that are in the Public Domain. The first of these are those collections of photographs donated to the Library of Congress. In our descriptions of photographs on this website, you will notice frequent reference to Harris & Ewing, Photographers, The Bain News Service, and many others. Their collections, frequently in the form of crates of glass negatives, are now owned by the LOC, and are in the Public Domain.
Also, any photograph taken by a federal employee in the course of their work, is not eligible for copyright protection and is also in the Public Domain. These photographs were never copyrightable.