In April 1981 our family spent spring vacation in Washington DC. On our way back to New England, we stopped at the Baltimore and Ohio Railroad Museum in Baltimore.

Clinchfield RR #1 4-6-0

l-r
"Memnon" B&O #57 0-8-0
"William Mason" B&O #25 4-4-0 , William Mason Locomotive Works, Taunton, MA, 1856. This is the oldest operating steam locomotive in the US.
"Thatcher Perkins" B&O #117 4-6-0

"Tom Thumb" B&O 2-2-0 replica.

#195 is a Western Maryland Alco RS-3.

#195 is a Western Maryland Alco RS-3.

Reading #2101 Class T1 4-8-4

B&O GP-9 #6473

Left: C&O stream-lined 4-6-4 #490. Originally built by Alco as a 4-6-2 Pacific in 1926, the C&O rebuilt it into a Hudson in 1946.
Right: B&O Pacific #5300 "President Washington"

Western Maryland F-7A #236

Locomotives on display here are parked for good viewing angles with plenty of space between them.

B&O E-A #51