"90"^^ . . . "1916Z"^^ . "The Pennsylvania Railroad's class E2, E3, E7 steam locomotives were of the 4-4-2 \"Atlantic\" passenger type, frequently called \u201Clight Atlantics\u201D after the introduction of the heavier E6 Atlantics. All were similar in size and boiler capacity but differed in firebox type, valves and valve gear, and cylinder diameter. Classes E2 and E3 were built simultaneously."@en . "20.7264"^^ . "1916Z"^^ . "Pennsylvania Railroad E7s"@en . . . "2"^^ .