"The Einstein Theory of Relativity" is the short version (587 m) of the lost American long version (1219 m) of Hanns Walter Kornblum's original German feature "Die Grundlagen der Einsteinschen Relativitäts-Theorie" from 1922 that is also lost.
1931
1922
1932
1988
1993
1911
1910
1902
1925
1972
2003
2009
1936
1939