Olive Wetzel Dennis was an engineer whose design innovations changed the nature of railway travel. Born in Thurlow, Pennsylvania, she grew up in Baltimore.

Daniel Willard was an American railroad executive best known as the president of the Baltimore and Ohio Railroad (B&O) from 1910 to 1941. He served on or headed several government railroad commissions in World War I and appeared on the cover of Time magazine in 1932 due to his part in negotiating wage cuts in the Great Depression.