The Minuteman Memorial Building

Historical marker location:

100 Constitution Avenue Northeast, Capitol Hill, District of Columbia

( Marker is on First Street Northeast (Alternate U.S. 1) south of Constitution Avenue Northeast, on the right when traveling north.)

ROA National Headquarters

The District was the site of a major flood in 1889: On June 4, 1889, a massive flood swept through the city, causing extensive damage and killing more than 20 people. The flood was caused by heavy rainfall and a failure of the city's sewer system.