The U.S. Copyright Office (www.copyright.gov) will conduct searches to identify the owners of copyright; however, they charge a high fee. The Copyright Clearance Center (www.copyright.com) acts on behalf of publishers and other copyright owners to grant copyright permission, especially for education purposes. Other organizations, such as BMI and ASCAP for musical rights, may license works on behalf of the copyright owners. However, you can expect all of these organizations to charge fees.