Middlesex, former county adjoining London, SE England. In 1965 the county was principally reorganized into the Greater London boroughs of Barnet, Brent, Ealing, Enfield, Haringey, Harrow, Hillingdon, Hounslow, and Richmond upon Thames.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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