It's Leap Year Day 1976, about a month before Conrail, as the Penn Central's No. 4889 leads Amtrak's National Limited eastbound on the old PRR main line. Note the raised air intakes just below the pantographs (an "aesthetic liability," to quote Karl Zimmermann, author of "The Remarkable GG1") and the plated-over original air intake location, just above the front side numeral. The 4889 was built in March of 1940 (36 years prior to this photo) by PRR-Westinghouse, and would be acquired by Conrail for freight service.
