>>Look above the advertisement bar, and there is a link to the "Photo Gallery". Jillions of pics there that should be considered "public domain" and therefore usable without explicit permission. Just give credit to the web site in your Bibliography.
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No they are not public domain. Copyright notices are not required to be included on a piece to show that it is indeed copyrighted..has been many years since the change from when copy notices were required. Photos and other fixed pieces of work are always to considered to be copyrighted material unless the photo contains information that otherwise states it to be public domain by that photo owner. If you want to take photos belonging to someone off of a website in order to use them elsewhere you still need permission from the owner of those photos first otherwise it is stealing.
Here's a rather interesting article that a lot of people should probably read on this very subject:
Are you a copyright criminal?
Towards the bottom of that article is a very pertinent section...
The Web is a particularly alluring temptress, beckoning with its wide selection of easily accessed content -- clip art, fonts, audio files, stock photos -- that promise to breathe life into your presentations. If you're vulnerable to the lure, remember this: Just because materials are on an "open" Web site doesn't mean they're in the public domain and free for you to download and reuse or copy.
"Too many people still assume that because it's freely accessible on the Web, it's freely available to reuse," says Professor Bell. "The right for you to view something on the Web is different from the right for you to display or perform it on your own site or presentation."
To be in the public domain -- and free of copyright complications -- information on the Web must have been placed there "expressly or deliberately" by the copyright owner himself, most obviously with an accompanying note saying, "I grant this to the public domain." Plenty of copyrighted works have been posted to the Web without authorization of the copyright holder. If you reuse that information without permission, you're breaking copyright law. Lack of knowledge about whether the information you take from the Web has itself been illegally copied or posted is no defense.
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PHWyvern