The U.S. Copyright Act, U.S. Code Title 17, defines original works of authorship as 'fixed in any tangible medium of expression, now known or later developed, from which they can be perceived, reproduced, or otherwise communicated, either directly or with the aid of a machine or device'. It lists at least eight categories of works of authorship. Three forms of works of authorship are literary works, motion pictures and other audiovisual works, and architectural works.

For more information, go to www.copyright.gov/title17.

anonymous
Anon.

Anonymous.