January 25, 2023

Today in History: Louisiana Purchase Treaty

Last Updated on May 13, 2021

Today in History–October 20–the Library of Congress features the Louisiana Purchase Treaty, ratified by the Senate on this day in 1803. For many fascinating facts about this key purchase, visit the Today in History section, then click the links below to access more primary sources about the Louisiana Purchase.

Senate Ratified the Louisiana Purchase Treaty October 20, 1803 from America’s Library

The Senate Approves the Louisiana Purchase Treaty United States Senate

Thomas Jefferson: The West online exhibition

Jefferson’s Annual Message to Congress October 17, 1803

Journal of the Executive Proceedings of the Senate, Thursday, October 20, 1803

The Louisiana Purchase Legislative Timeline

Louisiana: European Explorations and the Louisiana Purchase

Books & other documents related to the Louisiana Purchase

Maps related to the Louisiana Purchase

Purchase of Louisiana historical newspaper coverage 1803-09

Louisiana purchase historical newspaper coverage from 1810

Research Guide in Focus – Louisiana Purchase: A Legislative Timeline In Custodia Legis

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