Mary Joanna vs hashish

Mary Joanna

noun
  • Marijuana; cannabis. 

hashish

noun
  • A cannabis extract. 

  • Marijuana generally. 

  • The leaves and tender parts of the Indian hemp plant (which are intoxicating), which are dried for either chewing or smoking. 

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