Potomac Bluestone

  1. Law
  2. District of Columbia Code
  3. Government Organization
  4. District of Columbia Government Development
  5. Official Rock of the District of Columbia
  6. Potomac Bluestone

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The Potomac Bluestone is hereby designated the official rock of the District of Columbia.

(Mar. 11, 2015, D.C. Law 20-220, § 3, 62 DCR 12.)


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