I imagine this has been linked to before, but I've spent ages on this Youtube site:
https://www.youtube.com/user/britishpathe
A lot have just been left. Some like the 'day that shook the world' series are narrated. So Queen Victoria's funeral:
https://www.youtube.com/watch?v=UzzAhdS-xIo&list=PL40A6146642DEAF47
Abdication of the Tsar:
https://www.youtube.com/watch?v=9ngLrs6xTXY&list=PL40A6146642DEAF47
Generally I find the slice of life non-narrated ones most interesting. Like this 1930s travelogue for Bournemouth:
https://www.youtube.com/watch?v=xWz5rfgbULA
Cool. :)