Portal:National Register of Historic Places/Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

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  Commons
  Free media repository

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  Wikibooks
  Free textbooks and manuals

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  Wikidata
  Free knowledge base

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  Wikinews
  Free-content news

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  Wikiquote
  Collection of quotations

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  Wikisource
  Free-content library

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  Wikispecies
  Directory of species

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  Wikiversity
  Free learning tools

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  Wikivoyage
  Free travel guide

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  Wiktionary
  Dictionary and thesaurus