Charlie Chan Annex - This is where you can find all sorts of background material about the world's Best Chinese Detective!

 

The Maltese Falcon (1941) - Dashiell Hammett's novel brought to life in the film noir by the brilliant John Huston and Company.

 

The Thin Man (1934) - Another Hammett novel bringing Nick and Nora Charles to classic cinematic life (and series!) by William Powell and Myrna Loy.

 

http://www.archive.org - This link has assorted movies that are in the public domain, The Ghost Walks (1934) being the one that got Maven's attention.  Other ones you can download are Mr. Moto's Last Warning, The Thirteenth Guest (with Ginger Rogers), and Mad Monster!