1788

The United States Constitution went into effect as New Hampshire became the ninth state to ratify it.

1834

Cyrus Hall McCormick received a patent for his reaping machine.

1964

Three civil rights workers were slain in Philadelphia, Mississippi.

1973

The U.S. Supreme Court, in Miller v. California, ruled that states may ban materials found to be obscene according to local standards.

1997

The WNBA made its debut as the New York Liberty defeated the host Los Angeles Sparks 67-57.