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[[Image:Public_domain.png|thumb|200px|Public domain icon.]]
Public domain material is that which is free of [[copyright]]. With rare exception all original works are copyrighted automatically by [[USA]] copyright law. An author is under no obligation to provide copyright notice and the absence of such notice should not be considered a release of rights. Explicit permission must be given or use of materials is a violation of copyright law. 

For most works, "public domain" includes those for which the copyright has expired (70 yrs after the death of author), or the work was ineligible for copyright. The latter includes U.S. national government publications, such as from the [[USDA]], [[USGS]], [[NASA]], [[NOAA]], [[NSF]], etc..

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'''<font=large> Public Domain Image Sources </font>'''

The following is a list of sites where public domain images can be found. However, many of these sites may contain some copyrighted materials, and it is the users obligation to investigate and abide by the required use conditions.

==General (Photos, Clipart, etc.)==
* [http://commons.wikimedia.org/wiki/Main_Page Wikimedia Commons] The Wikimedia Foundation central repository for free photographs, diagrams, animations, music, spoken text, video clips, and media of all sorts.
* [http://www.flickr.com/ Flickr] Photo sharing gallery. (copyright and creative commons licensed photos). Use the [http://www.flickr.com/search/advanced/ Advanced Search] with ''"Only search within Creative Commons"'' checked.
* [http://www.sxc.hu/ Stock Xchng] Use [http://www.sxc.hu/advanced_search advanced search] for ''"Restricted OK"'' set to ''"No".''
* [http://www.pdimages.com/ Public Domain Images] by Alexander Media LLC
* [http://www.openclipart.org/ Open Clip Art Library]
* [http://www.morguefile.com/ morguefile] Public photo gallery. Massive archive of photos.
* [http://www.loc.gov/ Library of Congress]
* [http://archives.gov/ The National Archives]

==National Government Agencies==
* [http://www.blm.gov/nhp/index.htm Bureau of Land Management]
* [http://www.usbr.gov/ Bureau of Reclamation]
* [http://www.epa.gov/ Environmental Protection Agency]
* [http://www.loc.gov/ Library of Congress]
* [http://www.mms.gov/ Mineral Management Service]
* [http://nasa.gov/ National Aeronautics and Space Administration]
* [http://www.noaa.gov/ National Oceanic and Atmospheric Adminstration] 
* [http://www.nih.gov/ National Institutes of Health]
* [http://www.nps.gov/ National Park Service]
* [http://www.nsf.gov/ The National Science Foundation]
* [http://www.recreation.gov/index.cfm Recreation.gov]
* [http://www.osmre.gov/ Office of Surface Mining]
* [http://archives.gov/ US National Archives and Records Administration]
* [http://www.usda.gov/wps/portal/usdahome U.S. Department of Agriculture]
* [http://www.doi.gov/ U.S. Department of the Interior]
* [http://www.fws.gov/ U.S. Fish and Wildlife Service]
* [http://resourcescommittee.house.gov/ US House of Representative Committee on Resources]
* [http://www.usgs.gov/ US Geological Survey]
* [http://www.genome.gov/ National Human Genome Research Institute]

==Subjects==
=== Bible ===
* [http://thebiblerevival.com/clipart.htm Free Bible Clip Art Collection] Massive collection of Bible images, but no search engine. To search gallery use the following via Google - site:thebiblerevival.com keyword
* [http://www.biblepicturegallery.com/free/Screen-sized%20pictures.htm Free Bible Picture Gallery]
* [http://www.cts.edu/ImageLibrary/imagelibrary.cfm Christian Theological Seminary Image Library] Large collection of Old and New Testament characters, archealogy, maps, etc. (all images are public domain)
** [http://www.cts.edu/ImageLibrary/tissot.cfm Bible characters by James Tissot]
* [http://wikible.org/pool/Main_Page Wikible Media Pool]
** [http://wikible.org/pool/Category:Bible_characters Wikible - Category:Bible_characters]

===Biology===
* [http://biology.usgs.gov/features/photogal/photos.html Biology Photo Gallery] by the USGS
* [http://www.nature.nps.gov/biology/ Biology Resources] by National Park Service
** [https://science1.nature.nps.gov/npspecies/ NP Species] Species archive by the National Park Service
* [http://www.fws.gov/ Fish and Wildlife Service]
* [http://www.photolib.noaa.gov/collections.html NOAA Photo Library] by the National Oceanic and Atmospheric Adminstration
** [http://www.photolib.noaa.gov/nerr/index.html National Estuarine Research Reserve System] by NOAA
** [http://www.sanctuaries.nos.noaa.gov/pgallery/ciliving.html National Marine Sanctuaries] Photo Gallery by NOAA
** [http://www.photolib.noaa.gov/animals/index.html NOAA's Ark] Animal photos by NOAA
** [http://www.photolib.noaa.gov/reef/index.html Coral Kingdom] Coral Reef photo by NOAA
** [http://www.photolib.noaa.gov/otherphotos.html Other Photo Sites] by NOAA

* [http://www.genome.gov/ National Human Genome Research Institute]
**[http://www.genome.gov/10002096 Talking Glossary of Genetic Terms] by NHGRI
* [http://www.usda.gov/wps/portal/usdahome U.S. Department of Agriculture]
** [http://www.ars.usda.gov/is/graphics/photos/ Image Gallery]
** [http://www.fs.fed.us/ USDA Forest Service]
** [http://plants.usda.gov/ USDA Plants]
** [http://www.ars.usda.gov/main/site_main.htm?modecode=12-75-41-00 Systematic Entomology Laboratory]

===Earth Science===
* [http://www.blm.gov/nhp/index.htm Bureau of Land Management]
* [http://www.dlese.org/dds/index.jsp Digital Library for Earth System Education] funded by the National Science Foundation
* [http://www.epa.gov/ Environmental Protection Agency]
* [http://resourcescommittee.house.gov/subcommittees/emr/usgsweb/frames/main.html Minerals in Your World] image gallery by the U.S. Geological Survey and the Mineral Information Institute.
* [http://nasa.gov/ National Aeronautics and Space Administration]
** [http://antwrp.gsfc.nasa.gov/apod/archivepix.html NASA Astronomy Picture of the Day]
** [http://earthobservatory.nasa.gov/ NASA Earth Observatory]
* [http://www.photolib.noaa.gov/collections.html NOAA Photo Library] by the National Oceanic and Atmospheric Adminstration
* [http://www.usda.gov/wps/portal/usdahome U.S. Department of Agriculture]
* [http://www2.nature.nps.gov/geology/ Geology Resource] by the National Park Service
* [http://geology.usgs.gov/ Geology Resources] by the USGS
** [http://energy.usgs.gov/ Energy Resources] by the USGS
** [http://minerals.usgs.gov/ Mineral Resources] by the USGS
** [http://ncgmp.usgs.gov/ National Cooperative Geologic Mapping Program] by the USGS
** [http://marine.usgs.gov/ Coastal and Marine Geology Program] by the USGS
** [http://water.usgs.gov/ Water Resources] by the USGS

===Electron Micrographs===
* [http://remf.dartmouth.edu/imagesindex.html Dartmouth Electron Microscope Facility] by Dartmouth College
* [http://emu.arsusda.gov/ Beltsville Electron Microscopy Unit] by Beltsville Agricultural Research Unit (USDA)

===Geography===
* [http://memory.loc.gov/ammem/gmdhtml/gmdhome.html Map Collections: 1500-2004] Library of Congress
* [http://thebiblerevival.com/clipart45.htm Bible Maps]
* [http://www.nps.gov/ National Park Service]
* [http://www.recreation.gov/index.cfm Recreation.gov]
* [http://geography.usgs.gov/ Geography Resources] by the USGS
** [http://nationalmap.gov/ The National Map] Nations topographic map by the USGS
** [http://mapping.usgs.gov/ GISDATA Map Studio] by the USGS
* [http://wikible.org/pool/Category:Maps Wikible Maps]

===Prehistoric Life===
* [http://www.copyrightexpired.com/earlyimage/index.html EarlyImage] A Collection of Illustrations From Popular Sources Published Prior to 1923
**[http://www.copyrightexpired.com/earlyimage/prehistoriclifebeforekt/index.html Prehistoric Life (Before KT)] Dinosaurs and other
**[http://www.copyrightexpired.com/earlyimage/prehistoriclifeafterkt/index.html Prehistoric Life (After KT)] Wooly Mammoths, Sabre Tooths, etb.
* [http://www.cr.nps.gov/museum/exhibits/dino/overview.html Photo Gallery] by [[Dinosaur National Monument]]

===Portraits===
* [http://wwwihm.nlm.nih.gov/cgi-bin/gw_44_3/chameleon?skin=nlm&lng=en Images from the History of Medicine] by the National Library of Medicine
* [http://utopia.utexas.edu/project/portraits/ Portrait Gallery] by the University of Texas at Austin

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