Delaware & Hudson Alco and GE run-through power on the Lehigh Valley, 1973.
A D&H Alco C628, running long hood first, leads two GE U33Cs along the Lehigh River at Lehigh Tannery, PA. The train will continue on the LV to Avoca, from where the D&H will take it northward.
Map pin is approximate (couldn't find the exact terrain match).
And yes, it was definitely hazy, hot and humid!
This gallery contains photos of equipment and properties that became, were and used to be part of the Delaware & Hudson Railway. This gallery also contains photos of equipment paying tribute to the D&H or its predecessors.