Best database of vintage watch brands

It would be nice to have the definitive encyclopedia with all watch brands and their connections... Actually it would ruin the fun of trying to dig up information about some obscure brand. Anyway. Important databases:

• Mikrolisk. The horological trade mark index. Great. Super. Indispensable.

• Ranfft Watches. Archive: Watch Movements. Impressive collection of movements and all kind of technical info.

• Watch-Wiki. Great idea. But actually rarely useful in its present form.

To be continued...