A Metra commuter train waits for departure at Chicago Union Station on November 11, 2019.

Randy Knaub is getting the shot of another ubiquitous Chicago and North Western commuter train about to hit the MILW diamonds at Mayfair in 1976.

Metra EMD F40PH-3 No. 122 leads a commuter train out of Chicago Union Station towards the BNSF/Metra coach yard along Canal Street on a snowy November 11, 2019.

An outbound Metra commuter train led by EMD F40PHM-3 No. 200 splits two inbound Amtrak trains at CP Taylor south of Chicago Union Station on November 11, 2019. On the left is Amtrak train 351, a W... (more)

A mixed-up hodgepodge of Amtrak equipment passes under Roosevelt Road overpass after departing Chicago Union Station on November 11, 2019. Amtrak P42DC No. 171 and B32BWH No. 504 power the train t... (more)

Amtrak’s Pere Marquette train 371 heads south out of Chicago Union Station under Roosevelt Road deadheading to the Amtrak coach yard, most likely after being turned on the wye adjoining the Amtr... (more)

A view into Chicago Union Station from the Canal Street entrance shows stairs leading down into the Great Hall waiting room area on November 11, 2019. On the left is a portion of Amtrak’s Metrop... (more)

Metra trains wait out the work day laying over at the BNSF/Metra coach yard along Canal Street (since CB&Q days, nicknamed the Zephyr Pit) at Chicago, Illinois, as seen from Roosevelt Road on a sn... (more)

Amtrak Hiawatha Service train 332 from Milwaukee has just arrived at Chicago Union Station behind Siemens SC-44 No. 4624 on November 11, 2019.

BNSF GP39-2 No. 2759 switches Metra bi-level cars at the BNSF/Metra coach yard along Canal Street on November 11, 2019. It was windy and cold, with Chicago received between three and four inches o... (more)

ATSF 2395 and mate sit on the side lines at Archer Avenue Yard south of downtown Chicago. The two steam generator equipped Alco RS-1s are no longer needed for passenger terminal switching with the... (more)

Six Santa Fe F units are lined up at their Archer Avenue passenger engine facility south of downtown Chicago. The units are under Amtrak operation at this point and are being readied for an outbou... (more)

A lengthy Baltimore & Ohio transfer job behind a GP9/GP30 duo crosses the massive Chicago River drawbridge at Ash Street in Chicago.

A pair of the Monon's distinctive BL2s haul a Clearing Yard-Hammond transfer run through Pullman Junction in South Chicago. The EMD BL2, a late-1940s transitional model between cab units and road ... (more)

This is the answer to the seldom-asked question, "If an Alco RS2 mated with an EMD GP7, what would the kids look like?". The Rock Island re-engined five RS2s and an RS3 with EMD prime mo... (more)