three trolley lines and one steam railroad served Rosslyn in 1904
Source: Library of Congress, Baist's map of the vicinity of Washington D.C. (1904)
the Pennsylvania Railroad served Rosslyn
Source: National Archives, Plan for Development of Mount Vernon Memorial Highway
Rosslyn developed at the Virginia end of the Aqueduct Bridge.
the skyline of Rosslyn is significantly higher than in Georgetown across the Potomac River in the District of Columbia
Source: Arlington County, Rosslyn_skyline01
the Iwo Jima memorial of the US Marine Corps is across US 50 at the souttheast corner of Rosslyn
Source: Arlington County, Iwo Jima