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Southern Railway donated this caboose after the Federal government allowed railroads to operate trains without cabooses. Alexandria and Arlington’s  grew up around rail lines of the RF&P, the W&OD and two trolley lines (Washington, Alexandria and Mt. Vernon Railway, and the Arlington and Fairfax Railway).  The Bluemont Historical Railway Junction Display, Alexandria and Arlington’s only railway museum, is located in the caboose and is open to visitors on weekends.