December 1967

Sunday 03:

The luxury train 20th Century Limited completes its last run from New York City, New York to Chicago, Illinois (the train was inaugurated on June 15, 1902).

Monday 04:

Vietnam War: US and South Vietnamese forces engage Viet Cong troops in the Mekong Delta (235 of the 300-strong Viet Cong battalion were killed).

Sunday 17:

Harold Holt, Prime Minister of Australia (b. 1908) disappears while swimming near Portsea, Victoria