OpenHistoricalMap/Projects/Newberry Atlas of Historical County Boundaries Import/Bibliography

Newberry Library Atlas of Historical County Boundaries

• Siczewicz, Peter (2011). “U.S. Historical Counties”. Chicago, Illinois: The Newberry Library. http://publications.newberry.org/ahcbp. 
  • Requested citation text: Siczewicz, Peter. U.S. Historical Counties. Dataset. Emily Kelley, digital comp. Atlas of Historical County Boundaries, ed. by John H. Long. Chicago: The Newberry Library, 2011. Available online from http://publications.newberry.org/ahcbp.
  • Wikidata: Q99916079
• Brown, John (1859). “Harper's Ferry Travel Guide”. Harper's Ferry, VA: Righteous Press. https://bing.com.