On This Day, June 9: Laverne Cox is first transgender person on cover of Time

On this date in history:

In 1534, French navigator Jacques Cartier became the first European explorer to discover the St. Lawrence River in present-day Quebec.

In 1898, Britain leased Hong Kong from China for 99 years. The territory returned to Chinese rule in 1997.

In 1934, Donald Duck made his first screen appearance in "The Wise Little Hen."

File Photo by Monika Graff/UPI

In 1973, Secretariat, having won the Kentucky Derby and Preakness, captured racing's Triple Crown with a spectacular victory in the Belmont Stakes. The big chestnut colt, ridden by Ron Turcotte, was the first horse to do so since Citation in 1948.

In 1982, Gen. Efrain Rios Montt declared himself president of Guatemala. He overthrew the government in a coup d'etat in March 1982, and was himself overthrown in A