On November 9, 1938, Missouri ex rel. Gaines v. Canada was argued before the United States Supreme Court. The case arose after an African American student, Lloyd Gaines, was denied admission to the University of Missouri’s School of Law solely on the basis of his race. At the time there was no law school for African American students in Missouri, so Gaines would’ve had to study in an adjacent state. NAACP lawyer Charles Houston argued that Missouri had to build a law school for African American students, equal to the school for white students, or admit Gaines.
The Supreme Court agreed that “the State was bound to furnish [Lloyd Gaines] within its borders facilities for legal education substantially equal to those which the State there afforded for persons of the white race, whether or not other negroes sought the same opportunity.” You can read the entire decision, authored by Chief Justice Charles Evans Hughes, at https://www.law.cornell.edu/supremecourt/text/305/337.