The American Library Association maintains a Fair Use Evaluator to assist users in learning more about fair use and compiling necessary documentation to support a fair use evaluation.
Columbia University Libraries' Copyright Advisory Services maintains a Fair Use Checklist to assist users of copyrighted works in determining whether their proposed use are within the limits of fair use under U.S. copyright law (Section 107 of the U.S. Copyright Act).
The U.S. Copyright Office maintains a Fair Use Index in order to track a variety of judicial decisions to help both lawyers and non-lawyers better understand the types of uses courts have previously determined to be fair—or not fair.
The University of Pennsylvania's Online Books page includes a comprehensive FAQ to assist researchers in determining whether a copyright has been renewed.
The University of Reading and the Harry Ransom Center at the University of Texas collaborated to develop these databases to answer copyright questions about American and British publishing concerns and literary manuscripts.
Artists Rights Society (ARS) is the preeminent copyright, licensing, and monitoring organization for visual artists in the United States. Founded in 1987, ARS represents the intellectual property rights interests of over 50,000 visual artists and estates of visual artists from around the world (painters, sculptors, photographers, architects and others).
Société des auteurs dans les arts graphiques et plastiques (ADAGP) is the French royalty collecting and distribution society in the field of graphic and visual arts.
Both societies maintain searchable databases for the artists whose reproduction and communication rights they manage.