autography vs writercraft

autography

noun
  • Writing in one's own handwriting. 

  • A process in lithography by which a writing or drawing is transferred from paper to stone. 

  • An autobiography. 

writercraft

noun
  • penmanship; skill in writing; the art of writing 

How often have the words autography and writercraft occurred in a corpus of books? (source: Google Ngram Viewer )