Is it in the public domain? Find out here

The Samuelson Clinic releases "Is it in the Public Domain?" handbook: a handy, if sadly complicated, manual and flowcharts. “The handbook walks readers though a series of questions—illustrated by accompanying charts—to help readers explore whether a copyrighted work from that time is in the public domain, and therefore free to be used without permission from a copyright owner.  Knowing whether a work is in the public domain or protected by copyright is an important first step in any decision regarding whether or how to make use of a work.”