Dates: ?1877 – Feb 9 1941

“Chief Electrician to David Belasco since 1901”
Died of a stroke after collapsing on his way home from Radio City Music Hall, where he was chief assistant to the director of sound maintenance and operation (New York Times, Feb 10 1941).

The article below tells how Hartmann was responsible for naming Rosco Supergel 02 as ‘Bastard Amber’.

Spectrum Wavelengths - Louis Hartmann (January 2012)
[External Website]

Theatre Lighting by Louis Hartmann (1930)
[External Website]