I found this photo at My Link page Tom's Trolleybus Pictures, wich is located to the right of Your computer screen at www.trolleybuses.net

This photo was taken on May 4th, 1969.

A 1951 vintage Chicago Transit Authority electric trolleybus from the Marmon Harrington Corporation, is viewed heading westbound on Fullerton Avenue at the intersection of North Pulaski Road on the north side of Chicago Illinois.