Credits

All pictures used on this site are
 * In the public domain ,
 * Under a Creative Commons license ,
 * Used with permission, or
 * My own pictures

DraikJack. Sneaky - Firefly. 2011 . //Deviant Art//. Web. 24 Apr. 2013. <@http://draikjack.deviantart.com/art/Sneaky-Firefly-266734843>.

Evan-Amos. Standard-lock-key.jpg. 2010. //Wikimedia Commons//. Web. 7 Apr. 2013. <>.

Hudson, Paul. 11" MacBook Air . 2010. //Flickr//. Web. 7 Apr. 2013. <@http://www.flickr.com/photos/64654599@N00/5127790595>.

Mahmood, Khalid. Door Saidpur.jpg. 2011. //Wikimedia Commons//. Web. 24 Apr. 2013. <>.

Mottier, Justin. DSCF1427. 2012. //Flickr//. Web. 7 Apr. 2013. <@http://www.flickr.com/photos/8067750@N04/7467834348>.

Myrabella. Chateau Peles porte.jpg. 2012. //Wikimedia Commons//. Web. 24 Apr. 2013. <>.

Nemracc. Door of the former monastery mill Maulbronn.jpg. 2012. //Wikimedia Commons//. Web. 24 Apr. 2013. <>.

Smillie, Thomas W. Untitled. 1890. Smithsonian Institution, Washingon, DC. //Flickr//. Web. 7 Apr. 2013. <@http://www.flickr.com/photos/smithsonian/2551371512/>.

Юкатан. White House 06.02.08.jpg. 2008. //Wikimedia Commons//. Web. 7 Apr. 2013. <>.