What Led Zeppelin stole

Hi everyone,
This link to a YouTube video will set you wise to many of Led Zeppelin's biggest hits and from whom they stole them, without giving credit on their albums. I post this here because I know Tony has recorded "Kashmir" with The Jost Project on their new CD. Although "Kashmir" is not included on the video, this is labeled by its producer, Juan Carlos Hernandez, as Part I.
http://sco.lt/5F4OSf

This one is part III which I just found and haven't watched yet.
http://www.youtube.com/watch?v=K5uMQDlKn8g

Could not find part II but apparently there are lots and lots of these exposes on youTube.
gloria