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| U.S. Copyright Office Copyright and Other Restrictions Which Apply to Publication and Other Forms of Distribution of Images: Sources for Information Library of Congress online publication of the Prints and Photographs Division with links and information concerning co. | |
| Copyright Holder Directory The directory is designed to assist buyers who wish to license the copyrighted. Searchable database of copyright holders such as photographers, writers and artists. | ||
| Delphion Intellectual Property Network (IPN) Free web site for searching, viewing and analyzing patent documents. | ||
| Photo File Licensed sports photography wholesale catalog. | ||
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