| [CORRESPONDENCE] FROM: CAPTAIN WILLIAM A. CASTLE; TO: THE CHIEF, WAR COLLEGE DIVISION, GENERAL STAFF, U.S.A.; REGARDING: TRAINING OF VOLUNTEERS [1 OF 2] |
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| [CORRESPONDENCE] FROM: CAPTAIN WILLIAM A. CASTLE; TO: THE CHIEF WAR COLLEGE DIVISION, GENERAL STAFF, U.S.A.; REGARDING: TRAINING OF MACHINE GUN TROOPS |
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| [CORRESPONDENCE] FROM: CAPTAIN WILLIAM A. CASTLE; TO: THE CHIEF WAR COLLEGE DIVISION, GENERAL STAFF, U.S.A.; REGARDING: TRAINING OF MACHINE GUN TROOPS |
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| [CORRESPONDENCE] FROM: CAPTAIN WILLIAM A. CASTLE; TO: MRS. MARY CASTLE; REGARDING: WORK |
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| [CORRESPONDENCE] FROM: CAPTAIN WILLIAM A. CASTLE; TO: MRS. MARY CASTLE; REGARDING: LECTURE |
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| [CORRESPONDENCE] FROM: CAPTAIN A. PESQUILLER; TO: MON CHER AMI; REGARDING: (UNABLE TO TRANSLATE) |
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| [CORRESPONDENCE] FROM: BRIGADIER GENERAL M. CHURCHILL; TO: COLONEL WILLIAM A. CASTLE; REGARDING: INSTRUCTIONS [2 OF 2] |
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| [CORRESPONDENCE] FROM: BRIGADIER GENERAL M. CHURCHILL; TO: COLONEL WILLIAM A. CASTLE; REGARDING: INSTRUCTIONS [1 OF 2] |
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| [CORRESPONDENCE] FROM: B.J. RICHARDSON; TO: LIEUTENANT COLONEL WILLIAM A. CASTLE; REGARDING: SON |
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| [CORRESPONDENCE] FROM: B. BAUHNULEY(?); TO: COLONEL SHERMAN MILES; REGARDING: LETTERS OF INTRODUCTION |
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| [CORRESPONDENCE] FROM: ASSISTANT SECRETARY S.J. PETER; TO: THE SECRETARY OF WAR; REGARDING: LETTER OF JANUARY 3RD, 1917 |
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| [CORRESPONDENCE] FROM: AMERICAN EMBASSY, OFFICE OF THE MILITARY ATTACH, CONSTANTINOPLE; TO: UNKNOWN; REGARDING: CONSTANTINOPLE |
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| [CORRESPONDENCE] FROM: ADJUTANT GENERAL R.G. PAYNE; TO: COLONEL WILLIAM A. CASTLE; REGARDING: DETAIL AS MILITARY ATTACH, TURKEY, AND AS MILITARY OBSERVER IN SOUTHERN RUSSIA |
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| [CORRESPONDENCE] FROM: ADJUTANT GENERAL R. WAYNE; TO: COLONEL WILLIAM A. CASTLE; REGARDING: DETAIL AS MILITARY ATTACH, TURKEY, AND AS MILITARY OBSERVER IN SOUTHERN RUSSIA |
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| [CORRESPONDENCE] FROM: ADJUTANT GENERAL P.C. HARRIS; TO: MISS LUCILLE CASTLE; REGARDING: WILLIAM ANTHONY CASTLE [2 OF 2] |
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| [CORRESPONDENCE] FROM: ADJUTANT GENERAL P.C. HARRIS; TO: MISS LUCILLE CASTLE; REGARDING: WILLIAM ANTHONY CASTLE [1 OF 2] |
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| [CORRESPONDENCE] FROM: A.B. CARTER; TO: MR. R.W. JOHNSON; REGARDING: MR. THOMAS O. STEWART |
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| [CORRESPONDENCE REGARDING UNDETERMINED] |
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| [CORRESPONDENCE REGARDING UNDETERMINED] |
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| [CORRESPONDENCE REGARDING UNDETERMINED] |
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