I found this old electric trolley bus photograph taken in the city of Detroit Michigan way back in the year of 1935, at the website Tom's Trolley Bus Pictures www.trolleybuses.net

The Detroit Department of Street Railways had an "On again, Off again" affair with electric trolleybus operations until the year of 1962, when they finally decided not to discontinue them altogether.

The bus that is seen here, was manufactured by the Twin Coach Company of Kent Ohio.
Here in the Windy City of Chicago Illinois, the same model of Twin Coach Company electric powered trolley buses, opened service on Chicago's first electric trolley bus line. That line being, The Chicago Surface Lines Company ( Pre CTA) CSL Route # 76 Diversey Avenue Line on April 17th, 1930.