Duke City vs Mound City

Duke City

name
  • Synonym of Albuquerque, New Mexico, USA. 

Mound City

name
  • Synonym of Saint Louis, Missouri, USA. 

  • A town, the county seat of Campbell County, South Dakota. 

  • A city, the county seat of Linn County, Kansas. 

  • An unincorporated community in Crittenden County, Arkansas. 

  • A city, the county seat of Pulaski County, Illinois. 

  • A city in Holt County, Missouri. 

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