Moho Forum

Japan's National Film Center, part of the National Museum of Modern Art in Tokyo, has put dozens of old anime online (Japanese), to mark 100 years of Japanese animation.

Here's the story http://www.bbc.co.uk/news/world-asia-39301120

and here's the website (in Japanese at present - "The English website will be available in a month or two") http://animation.filmarchives.jp/index.html

Site now has English Webpage translation and believe me for Japan that's being very 'polite' a veritible treasure trove.