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World War II-dated TLS signed “L. R. Groves,” one page, 8 x 10.5, Ward Department, Office of the Chief Engineers letterhead, October 31, 1944. Stamped “Restricted,” a letter to Lt. Col. Whitney Ashbridge, former commander of the Army Post at Los Alamos during the Manhattan Project, then stationed with the Engineer Officer Replacement Pool at the Army Service Forces Training Center in Fort Leonard Wood, Missouri. In full: “The recent visitor at your last station has indicated to me his great appreciation of the courtesies extended to him upon that visit and of the great pains taken, particularly by you, to make his visit both pleasant and profitable. The manner in which this appreciation was expressed reflects great credit upon you. I appreciate the manner in which you handled this affair. I am sorry that it was not possible for me to see you before your departure, but I hope that I will have an opportunity to see you some time in the future.” In fine condition.
Throughout 1944, General Leslie R. Groves directed the Manhattan Project through its critical transition from research to full-scale production and weaponization. He oversaw the rapid expansion of major facilities at Oak Ridge and Hanford, including the completion and operation of the Alpha II electromagnetic ‘racetrack’ buildings by October 1944, which significantly increased the output of enriched uranium. At the same time, Groves coordinated work at Los Alamos as the laboratory moved toward solving the engineering challenges of a workable atomic bomb. He also chaired the Combined Development Trust, established by the United States, Britain, and Canada to secure uranium supplies worldwide, most notably acquiring over 3 million pounds of uranium ore from the Belgian Congo.
By late 1944, these efforts had brought the program to a decisive stage. Production sites were fully operational, and Los Alamos was intensifying final design work, even as Allied intelligence concluded that Germany’s atomic program had not advanced beyond the laboratory. Despite this, wartime urgency remained high: during the Battle of the Bulge in December 1944, President Franklin D. Roosevelt inquired about the possibility of deploying an atomic bomb against Germany, with Groves informing him that a workable weapon was six months away. Trinity, the first detonation of a nuclear weapon, occurred roughly eight months later on July 16, 1945.
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