Top image: trolley alongside Naugatuck River in Naugatuck, Conn. Bottom left image: trolley on Main Street in Stamford, Conn. Bottom right image:... Show moreTop image: trolley alongside Naugatuck River in Naugatuck, Conn. Bottom left image: trolley on Main Street in Stamford, Conn. Bottom right image: trolley car #21 on Hotel Green in Danbury, Conn. Show less