Electric Legacy.
Two venerable electric locomotives sit on display outside the Railroad Museum of Pennsylvania.
At right is Pennsylvania Railroad (PRR) GG1 no. 4800, one of 139 built by General Electric and the PRR Altoona Works between 1934 and 1943. The locomotive is nicknamed "Old Rivets" as it is the only GG1 with a riveted (rather than welded) body. 4800 was also the first GG1 to enter service, hauling a special train on January 28, 1935 to mark the completion of electrification from Washington, DC to New York City.
At left is Amtrak AEM-7 no. 915, one of 65 total manufactured by EMD / ASEA between 1978 and 1988 (54 purchased by Amtrak, 4 by MARC, and 7 by SEPTA). All have been retired at this point, with four entering preservation so far.