Thi site has been put on line some days ago and it is realised under the leadership of the French Ministery of Culture.
It is very extensive and shows some materials which were not publicly available before; it is not only the story of the Lumière family (especially Louis) but it also shows how the process evolved into an industry and how all kinds of users used these plates all over the world.
i found some pictures fascinating by their beauty of colours, detals, etc.
There is also a very extensive bibliography and links to specialised websites
Unfortunately for many of you, the website is in French and has no English version for texts but at least the important number of autochrome plates shown are "international" ! If some of you are interested by a very special text of the site, just ask me for the English translation.
Alternative cheers from France,