John Harkness appeared in the Thanhouser release of Nicholas Nickleby in 1912.
John Harkness
A Thanhouser Company player, in one film you can watch free online.
Watch John HarknessOpens Nicholas Nickleby (1912)
Biography
Q. David Bowers, Thanhouser Films: An Encyclopedia and History. This is the entry in full.
Filmography

