P42s get worked up at Race Street Yard at night. A couple of these units are assigned to Philadelphia to handle the Pennsylvanian, which has a power swap in Philadelphia (from an electric to diesel) as the catenary doesn't go past Harrisburg and diesels don't operate into NYP.
A continuously growing album of photos that IMHO reveal the awesome and seldom-seen beauty of the railroad world from the dimming of day to dawn's early light! From dusk to dawn, trains roll on! (I'm still finding gems of sunset-to-sunrise surprises!)