Scope and Contents: "A Mighty Oak," written by John A. Wallace who served under Lieutenant Colonel George E. Halliday during World War II, circa 2000
Letter from John R. Wallace to Gregory A. Zawisza, Director of Special Projects, Purdue University, June 12, 2000.
Letter from Gregory A. Zawisza, Director of Special Projects to John R. Wallace, March 29, 2000.
History of the 633rd Field Artillery Battalion, March 1943 - June 1944.
Letter from E. Charles McInnis (compiler of the 633rd history) to John Wallace, November 30, 1987.
Copy of photograph of 633rd, circa 2000.
The Purdue Agriculturist, October 1927, p. 12, lists G.E. Halliday as Circulation Manager.
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George E. Halliday collection
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