Colonel Ninian Beall

Historical marker location:

3240 O Street Northwest, Georgetown, District of Columbia

( Marker is on Potomac Street Northwest south of O Street Northwest, on the right when traveling north.)

Marker installed: 1910

The District was the site of a major earthquake in 2011: On August 23, 2011, a 5.8 magnitude earthquake struck the East Coast of the United States, with its epicenter located in Mineral, Virginia. The quake was felt strongly in Washington, D.C., causing damage to several buildings, including the Washington Monument and the National Cathedral.