EFFECTS
- BBC Sound Effects http://bbcsfx.acropolis.org.uk
- SOUNDMORPH https://www.soundmorph.com/sounds
- TRAILER MUSIC ACADEMY https://soundcloud.com/trailermusicacademy/sets/trailer-tools-vol-1-free
MUSIC
- KB / Farbrausch (some songs under applicable copyright law) https://music.kebby.org
IMAGES
- PIXABAY http://pixabay.com
- UNSPLEASH http://unspleash.com
FILMS
- NATIONAL ARCHIVES CATALOG https://catalog.archives.gov/
- PIXABAY http://pixabay.com
- PUBLIC DOMAIN TORRENTS http://www.publicdomaintorrents.info/index.html
- ARCHIVE https://archive.org/details/feature_films
- PUBLIC DOMAIN MOVIES http://publicdomainmovies.net
- PUBLIC DOMAIN FLIX https://publicdomainflix.com
VISUALIZATIONS
- NASA VISUALIZATION STUDIO https://svs.gsfc.nasa.gov
