Students at Mustang Trails Elementary celebrated '89er Day on Monday with events to mark the Oklahoma Land Run.
On March 23, 1889, President Benjamin Harrison issued a proclamation opening more than 2 million acres of unassigned land in Indian Territory to settlement.
Under the terms of the proclamation, no one could enter the area to claim land until noon on April 22, 1889.
The proclamation attracted widespread interest. More than 50,000 people lined up around the edges of the Unassigned Lands. When the cannons were fired at noon, they raced to claim homesteads or town sites.
The Land Run was a defining moment in Oklahoma's history. A number of cities grew from the original town sites, including Oklahoma City.