Libby vs North Platte

Libby

name
  • A city, the county seat of Lincoln County, Montana, United States. 

  • A diminutive of the female given name Elizabeth and Isabel. 

  • A surname originating as a matronymic. 

North Platte

name
  • A city, the county seat of Lincoln County, Nebraska, United States. It was named after the river. 

  • the North Platte River in Colorado, Wyoming and Nebraska, USA, which joins the South Platte River near the city of North Platte, forming the Platte River. 

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