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The compendium is based on material developed by:

  • Project Gutenberg’s The Practice and Science of Drawing
  • Jonathan Ingram and the Online Distributed Proofreading Team
  • Stan Prokopenko ( or
  • Royal Talens
  • Art Factory
  • Andrew Loomis’ Drawing the Head and Hands
  • John Asaro
  • Ben Rathbone
  • David Gray
  • Sketchfab
  • Inge Tang

Porsgrunn 01.03.2013

Inge Tang