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This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as
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Most of the images in this collection were published before 1929 and are therefore in the public domain in the United States. A few images were published after this date and may be restricted by copyright.
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