| [CORRESPONDENCE FROM E. MURPHY TO JOSEPH M. COLBY REGARDING EXTRA PHOTOGRAPH] |
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| [CORRESPONDENCE FROM E. MURPHY TO C.L. SCOTT REGARDING THANK YOU] |
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| [CORRESPONDENCE FROM E. MACCEY TO JOSEPH M. COLBY REGARDING THANK YOU FOR YOUR LETTER OF 20TH JUNE] |
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| [CORRESPONDENCE FROM E. L. CUMMINGS TO JOSEPH M. COLBY REGARDING ORDNANCE CORPS] |
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| [CORRESPONDENCE FROM E. J. MCGAW TO JOSEPH M. COLBY REGARDING CONGRATULATION] |
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| [CORRESPONDENCE FROM E. GRAY TO JOSEPH M. COLBY REGARDING SHOP ORGANIZATION] |
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| [CORRESPONDENCE FROM E. GRAY TO JOSEPH M. COLBY REGARDING MEDIUM TANK] |
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| [CORRESPONDENCE FROM E. GRAY TO JOSEPH M. COLBY REGARDING LETTER] |
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| [CORRESPONDENCE FROM E. GRAY TO JOSEPH M. COLBY REGARDING LETTER OF 25 JANUARY] |
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| [CORRESPONDENCE FROM E. GRAY TO JOE REGARDING MATERIAL ON MEDIUM TANK] |
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| [CORRESPONDENCE FROM E. E. MACMORLAND TO J. M. COLBY REGARDING CONGRATULATION][WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM DORIS E. SMITH TO GENERAL COLBY REGARDING THANK YOU FOR YOUR LETTER OF SEPTEMBER 23RD TO ROCKWELL] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM DETROIT ARSENAL TO MAJOR GENERAL G. M. BARNES REGARDING INFORMATION ON DIESEL ENGINES OVER 400 HP] |
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| [CORRESPONDENCE FROM DETROIT ARSENAL TO COLONEL C. K. MCCLELLAND REGARDING VARIOUS ARMY MATTERS][WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM DETROIT ARSENAL TO COLONEL B. J. LEMON REGARDING LARGE SINGLE TIRES VERSUS DUALS] |
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| [CORRESPONDENCE FROM DETROIT ARSENAL TO CAPTAIN WETMORE HODGES, JR. REGARDING CONGRATULATIONS ON BEING AWARDED THE LEGION OF MERIT] |
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| [CORRESPONDENCE FROM DETROIT ARSENAL TO BRIGADIER GENERAL A. G. GILLESPIE REGARDING REDESIGNATION AND REORGANIZATION OF OFFICE, CHIEF OF ORDNANCE-DETROIT AS DETROIT ARSENAL] |
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| [CORRESPONDENCE FROM DEPARTMENT OF THE ARMY, OFFICE OF THE CHIEF OF ORDNANCE TO BRIGADIER GENERAL JOSEPH M. COLBY REGARDING THANKS FOR KIND NOTE OF CONGRATULATIONS] |
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| [CORRESPONDENCE FROM DEPARTMENT OF THE ARMY, OFFICE OF THE CHIEF OF ORDNANCE TO BRIGADIER GENERAL JOSEPH M. COLBY REGARDING INVITATION TO INAUGURAL PARTY FOR NEW CHIEF OF ORDNANCE] |
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| [CORRESPONDENCE FROM DELMAR G. ROOS TO JOSEPH M. COLBY REGARDING VISIT] |
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