The Leviathan was built in September 1868 by the Schenectady Locomotive Works in New York, along with three other identical engines, numbered 60, 61, and 62, respectively named the Jupiter, Storm, and Whirlwind.

One month after being commissioned into service, the Leviathan made history by hauling Governor Leland Stanford's special train to Camp Victory in Toano, Nevada, and from there, it was picked up by sister engine, the Jupiter and taken to the ceremony in Promontory.

[3] The replica however was also fitted with modern-day features upon construction, including an oil bunker, a small headlight on the rear of the tender, air brakes, and a varnished wooden cab.

[4][5][6] In 2018, the Leviathan replica was acquired by the Stone Gable Estates, which opened both the Star Barn Complex and the Harrisburg, Lincoln and Lancaster Railroad in Elizabethtown, Pennsylvania.

The Leviathan replica currently operates on the Elizabethtown line exclusively for special events, while being re-lettered as Pennsylvania Railroad 331, the locomotive that pulled President Abraham Lincoln's funeral train in 1865.