On this date in History ... July 11, 1956:
decades following the Civil War, "In God We Trust" appeared on most
coins. Since 1938, the motto has appeared on all American coinage.
On July 11, 1956,
during the height of the Cold War struggle with the officially atheist Soviet
Union, Congress passed a joint resolution, signed by President Dwight
Eisenhower, declaring "In God We Trust" to be the national motto.
following year, on Oct. 1, the motto appeared for the first time on paper
currency - on the back of the dollar bill.