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Federal
Amending America: Proposed Amendments to the United States Constitution, 1787 to 2014
National Archives and Records Administration —
This dataset provides information about more than 11,000 proposed Constitutional amendments introduced in the United States Congress from 1787 to 2014. This dataset... -
Zoning Map Amendments
District of Columbia —
A map amendment is a request for a zone change from one zone to another in a specific area of the District. Contains map amendments going back to 2000. New map...