The Oak Park IL Society of Model Engineers.

I photographed this digital live sound video, at The Oak Park Society of Model Engineers H.O Scale Model Railroad Club.

Seen here crossing several Bachman bridges placed together to represent the Missisippi River bridge on the club layout, is My own circa 1972 early merger era Illinois Central Gulf Railroad switching local.

The Life Like Proto 2000 EMD SW 9 switcher in pre 1967 Illinois Central colors and markings, along with the trailing Athearn cars...capture the look and feel of the then "New" Illinois Central Gulf, as it may have been back in 1972 and 1973.
The trailing Gulf, Mobile & Ohio caboose is a nice touch to the consist.