Letter on Truman's "Ace in the Hole" From: Harry S. Truman, President of the United States of America
To: Bess Truman, First Lady of the United States of America
Date: July 31, 1945
Letter to Bess Truman July 31, 1945
He [Stalin] doesn't know it but I have an ace in the hole and another one showing - so unless he has threes or two pair (and I know he has not) we are sitting all right.
A possible reference to the atomic bomb, possessed at the time by the U.S. but not by Russia.
Correspondence 
