To find FREE music/sound and images for your documentary, search by "Open Source" or "Creative Commons".

Below are a few possible sites:

Photos

• http://www.flickr.com/photos/library_of_congress/
• http://www.imageafter.com/
• http://imagebase.davidniblack.com/main.php
  
• http://www.burningwell.org/
• http://pdphoto.org/
• http://www.wpclipart.com/browse.html (clipart)
• http://www.unclesamsphotos.com/
• http://www.archives.gov/

Music

• http://www.archive.org/details/opensource_audio
  
http://www.opsound.org/pool/genre/
• http://incompetech.com/m/c/royalty-free/
• http://www.jamendo.com/en/creativecommons
• http://dig.ccmixter.org/music_for_film_and_video
• http://www.last.fm/tag/creativecommons
• http://vimeo.com/musicstore?utm_source=newsletter1011

Sounds

• http://www.freesound.org/
• http://soundbible.com/
• http://soungle.com/