The MummyPhoto: Trailer screenshot, from DVD The Mummy, Universal 2004, Public domain (Wikimedia Commons) · Source
The Invisible ManPhoto: Karoly Grosz, Public domain (Wikimedia Commons) · Source
Creature from the Black LagoonPhoto: Florida Memory, Public domain (Wikimedia Commons) · Source
Bride of FrankensteinPhoto: Universal Pictures, Public domain (Wikimedia Commons) · Source
The Phantom of the OperaPhoto: Movie still scan, Public domain (Wikimedia Commons) · Source
Count OrlokPhoto: F. W. Murnau, Public domain (Wikimedia Commons) · Source
King KongPhoto: en:Warner Bros. currently owns the rights to the 1933 version of "King Kong", following the demise of RKO in 1959., Public domain (Wikimedia Commons) · Source
GodzillaPhoto: Toho Company Ltd., Public domain (Wikimedia Commons) · Source