Which of the cases had the decision overturned, Plessy v. Ferguson or Lochner v. New York?
Plessy v. Ferguson:  The decision was handed down by a vote of 7 to 1 with the majority opinion written by Justice Henry Billings Brown and the dissent written by Justice John Marshall Harlan. Lochner v. New York: Lochner v. New York, 198 US 45 (1905) was a landmark US labor law case in the US Supreme Court, holding that limits to working time violated the Fourteenth Amendment. Lochner v. New York:  This decision has since been overturned.
Lochner v. New York