I'm not sure if this has been posted before, I searched but couldn't find anything. Anyway, it is a documentary on the building of the 356. It's a five part series with each one being about 8-10 minutes each. I did find a complete one but it was a lower quality video. Pretty cool. Note the lack of any safety gear for the most part.
Part 1 - https://www.youtube.com/watch?v=LQBrQ5qd5w8
Part 2 - https://www.youtube.com/watch?v=KS-tmnS_7_c
Part 3 - https://www.youtube.com/watch?v=u53haOMYcH0