Copyright


Copyright Term and the Public Domain in the United States (Cornell)
Copyright, Intellectual Property Rights, Fair Use (VRA)
Creative  Commons
Intellectual Property Rights Action Chart (CRM)
LC  Copyright Catalog, 1912-1939
LC  Copyright Catalog, 1940-1949
LC  Copyright Catalog, 1950-1959
LC  Copyright Catalog, 1960-1969
PDTool - Copyright Slider
When Works Pass into the Public Domain
Yes You  Can!