This clip is made up of images and sounds downloaded for free from the internet. All except two were explicitly described as copyright free or had a suitable Creative Commons licence. One exception is the footage at the end (Pearls and Savages, 1921), which comes from the National Film & Sound Archive (NFSA - Australia). The NFSA has a 'zero licence fee' for up to ten minutes of footage per one hour of documentary, including online documentaries. (The footage is also beyond the 70 year copyright period.) Another exception is the opening image of a chief from the Seminole Tribe in Florida. It was made in 1838 so it's also beyond its copyright period. Music is Digya (2012) by Kevin MacLeod.
The clip is part of a filmmaking experiment using copyright-free (or derivatives allowed CC) sounds & images to tell the story about the relationship between different media technologies and society in general. Eventually I hope to make more clips for this story (the written period, print, broadcast etc.)