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Mining data (Ready-made sources (Documents (Public (Marriages, Census,…

- - - - Utensils
      - Tools
      - Implements
  - - - Home video
      - Letter
      - Dairies
    - - Marriages
      - Census
      - Death
      - Court-Transcripts
      - Birth record
      - Mass media
      - Police records
    - - Radio
      - Newspaper
      - Film
      - Photograph
      - Television
      - Cartoon
      - Internet
        
        Chatroom
        
        Wiki
        
        Online discussion
        
        Blog
        
        Email
        
        You tube
    - - Film
      - Video
      - Web-based media
      - Photograph