Bushnell vs Father of the Submarine

Bushnell

name
  • A village in Kimball County, Nebraska, United States. 

  • An unincorporated community in Barton County, Missouri, United States. 

  • A surname. 

  • A city, the county seat of Sumter County, Florida, United States. 

  • A city in McDonough County, Illinois, United States. 

  • A small town in Brookings County, South Dakota, United States. 

Father of the Submarine

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