Chicago (CTA) Trolleybus 1972, No Sound!.

Filmed in Summer/Fall of 1972. Maybe Spring 1973?.
CTA Trolleybus, North-West side Routes.
Filmed before the end of TB service, Sun 25 March 1973.
NO SOUND!, Enjoy.

From the collection:
The Late Ray Neilson (1943-2005), GPS Video / R. Hill Film.