Films Available Online
METROPOLIS
http://archive.org/details/FilmeMetropolis1927.
THE CABINET OF DR. CALIGARI
https://archive.org/details/thecabinetofdrcaligari
TRIUMPH OF THE WILL
http://archive.org/details/TriumphOfTheWillgermanTriumphDesWillens
BERLIN: SYMPHONY OF A GREAT CITY
http://archive.org/details/BerlinSymphonyofaGreatCity