sentences:  WOOK, which moved to 1340 kHz in 1951, was the first radio station in the Washington, D.C., area to serve the African-American community, and United owner Richard Eaton immediately hired a black announcer for WSID.The station moved to 1010 kHz in July 1950.Two years later, the city of license was modified to officially serve both Essex and Baltimore; the Essex main studio was closed in 1956, at which time the license moved entirely into Baltimore.