The first patent in the United States for barbed wire was issued in 1867 to Lucien B. Smith of Kent, Ohio, who is regarded as the inventor. Joseph Glidden of DeKalb, Illinois, received a patent for the modern invention in 1874 after he made his own modifications to previous versions.
- "The American Experience Technology Timeline: 1752 - 1990". The American Experience. Public Broadcasting Systems. 2000. Archived from the original on 7 February 2009. Retrieved 2009-01-28.
- "Lucien B. Smith". Ohio History Central. Ohio Historical Society. 31 July 2006. Archived from the original on 2007-10-03. Retrieved 2009-01-28.