iCivics
I Civics: Slave States, Free States
In this lesson, students learn about the balance between slave states and free states and their geography, including the Missouri Compromise and the Compromise of 1850.
Other
Wake Forest University: History of Compromise Legislation
Annotated chronology of various compromise legislation, including the Northwest Ordinance, the Constitution, the Missouri Compromise, 1850 Compromise, and Kansas-Nebraska Act.
University of Groningen
American History: Documents: Dred Scott Case
Here you will find the primary source text of the case and the opinions of the Supreme Court Justices in the Scott v Sandford case which ultimately ruled on the constitutionality of the Missouri Compromise.