A woman in a green dress waits for a CTA Blue Line train in the subway at Chicago Avenue. more)

New CTA 5000 series cars is now approaching California on its way to the end of the line at 54th/Cermak during the testing phase on the CTA Pink Line.

Red Line train to 95th will make the loop around just north of Howard and then will head south to the other end of the Red Line at 95th and Dan Ryan on the south side of Chicago.

An outbound Red Line train to Howard passes and inbound Purple Line Express train to the Loop at Sheridan Road on Chicago's north side.

"This is Diversey, doors open on the right at Diversey". Northbound purple line express train makes a stop in the Lakeview neighborhood on Chicago's north side on it's way to Linden.

A CTA train heads around the loop as viewed from several stories above the tracks.

A Blue Line train, bound for the loop, climbs out of the Logan Square subway.

A 4 car Pink Line train crosses a busy Chicago River on a sunny and less humid Sunday afternoon.

A 4 car Pink Line train crosses Chicago River on it's trip into the Loop. Taken from the Willis (Sears) Tower Skydeck.

One of the CTA's hightech 5000-series test cars glides down the grade to the portal of the Logan Square subway.

As rush hour begins, three trains meet at the CTA's Tower 18 on the northwest corner of the Loop. A rush hour only Purple Line train speeds north as a Brown Line train waits to follow it. A Green ... (more)

This Jackson Park "B" train approaches the Indiana Ave. station on the South Side. The Chicago Junction right of way can be seen to the right, and the bridge across the Rock Island for the L's st... (more)

A look back at life in America, 1956. It is believed this is Howard St., where passengers transfer to the Skokie and Wilmette lines, for trains running under wires. South of here is the Howard-J... (more)