Answered By: Gabe Gossett
Last Updated: Jan 14, 2016     Views: 75

It is often difficult to determine if the copyright has expired on a work. The options below can assist.

  • Peter Hirdle at Cornell University developed a complex chart that covers all aspects of copyright expiration. The chart is licensed for public use through Creative Commons.
  • Lolly Gasaway at the University of North Carolina at Chapel Hill created a more abbreviated version at

  • The U.S. Copyright office has listed online copyright records from 1978 to the present and provides helpful research information at Records prior to 1978 can only be researched manually by the U.S. Copyright Office for an hourly fee.

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