Red River Bridge War - Martial Law Declared

The Red River Bridge War was a 1931 bloodless boundary conflict between Oklahoma and Texas over an existing toll bridge and a new free bridge crossing the Red River. On July 24, 1931, Oklahoma Governor Murray declared martial law at the site, enforced by Oklahoma National Guardsmen.

• Wikipedia: Red River Bridge War
• OHS: Turnpikes and Toll Bridges (image source)
• Wikipedia: William H. Murray