5300, also known as President Washington, is the sole survivor of the P-7 class 4-6-2 "Pacific" type steam locomotives.

Between 1906 and 1928, the Baltimore and Ohio Railroad, the first Class 1 railroad to be incorporated in the United States, ordered over 200 P class 4-6-2 "Pacific" type steam locomotives from the Baldwin Locomotive Works of Philadelphia, Pennsylvania primarily to be used in passenger trains.

5300 rolled out of the factory in February 1927, it was coupled to the Capitol Limited train to take part in the Fair of the Iron Horse, a celebration of the centenary of the B&O, alongside several other B&O steam locomotives.

[4] As the B&O began purchasing diesel locomotives, a lot of the P class 4-6-2s were removed from the active roster, and those that were left were reassigned to secondary passenger service in Pennsylvania and Ohio.

The museum was his favorite place to come and he was always looking for ways to improve and enhance its collections,' Mr. Wilson said.

5300, it was then repainted in its original 1927 appearance which included: renumbering to 5300 from No.100, the dual-beam headlight swapped for a single beam Pyle National headlight, and the engine was repainted to the original B&O olive green and gold scheme with the Presidential series name, The President Washington, onto the cab.

The locomotive also received another cosmetic repaint in 1981,[8] and the curved coal bunker sides tender remains much as it was in service.

5300 was initially put on static display at the museum in November 1968,[9] and it subsequently spent the next thirty-seven years sitting outdoors alongside other locomotives, including No.

5300 was put inside one of the museum's buildings to remain safe out of the elements and received a fresh repaint in its original olive green color.

5300 was removed from static display and towed to the museum's locomotive shop for cosmetic restoration.

5300 is the sole survivor and the prototype of the P-7 class, and it is the last out of over 200 4-6-2 "Pacifics" ever built for the Baltimore and Ohio left to survive the scrapper's torch.