The public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction. This body of information and creativity is considered to be part of a common cultural and intellectual heritage, which, in general, anyone may use or exploit, whether for commercial or non-commercial purposes.
If an item ("work") is not in the public domain, this may be the result of a proprietary interest as represented by a copyright or patent. The extent to which members of the public may use or exploit it, in relation to which proprietary interests exist, generally is limited. However, when a work's copyright or patent restrictions expire, it enters the public domain and may be used by anyone for any purpose.

AntiqueClipart.com - Free archives of Victorian, Edwardian, and American Civil War era images.
Bayonet.net - Clipart images and photos related to the U.S. Army.
Bob Hines Line Illustrations - Line drawings of birds by Bob Hines, available from the U. S. Fish and Wildlife Service.
Bob Savannah Line Art - Line art drawings created for the U.S. Fish and Wildlife Service of animals, fish, and wildlife.
Clippix Clip Art - Free and public domain clip art images, artist and webmaster resources.
Images in the Public Domain - A collection of images from Webster's New International Dictionary of the English Language, 1911, G C Merriam Co. Springfield, MA. Includes machines, insects, mammals, mollusks, reptiles, and agriculture.
Line Art Drawings - Line drawings of wildlife from the US Fish and Wildlife Service. Art can be used with no approval.
Open Clip Art Library - An archive of copyright free images that can be used for any purpose.
Meta Description: [ The Open Clip Art Library aims to create an archive of user contributed clip art that may be freely used. All graphics submitted to the project must be placed into the Public Domain according to the Public Domain statement created by the Creative Commons. If you'd like to help out, please join th... ]
Public Domain Images - Image research service offering pictures and videos available for use. Some examples are provided.
Meta Description: [ Browse a catalog of FREE downloadable visuals, and find out how inexpensive it is to get the pictures and videos you need for your projects. Avoid stock photo & stock footage prices. ]
Public Domain Stock Photos - The collection includes backgrounds, objects, people, seasonal themes, and nature.
Meta Description: [ Logo design & webmaster resources ]
Tom Kelley Line Art - Copyright free nature line illustration by Tom Kelley, available from the U.S. Fish and Wildlife Service.
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