First double cabin GE ALCo ready tu run. It was tested with freight trains from Buenos Aires to Rosario over FC Belgrano sud line ( CGBA). Photo digitally restored by Goldemberg.
Taken with permission.
Over the C14 branch ( FC Gral Belgrano Line) several workers check the tracks before train running. Here inside the motorcar going down to the loop @ 30mph
"Tren a las Nubes" explorer consist approaching to the first loop @ notch 8.