| [CORRESPONDENCE FROM JOSEPH M. COLBY TO LEO A. LEVY REGARDING NEW SEISMICHRONE] |
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| [CORRESPONDENCE] FROM R. WOLCOTT HOOKER TO BRIGADIER GENERAL JOSEPH M. COLBY REGARDING RETIREMENT |
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| [CORRESPONDENCE] FROM MR. ERNEST P. LAMB TO COLONEL JOSEPH M. COLBY REGARDING APPRECIATION |
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| [CORRESPONDENCE] FROM JOSEPH M. COLBY TO GENERAL R.L. MAXWELL REGARDING REPLY TO LETTER |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO PATRICK ROY BUSH REGARDING LETTER OF NOVEMBER 2, 1963] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.M. BARNES REGARDING HEAVY TANK] |
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| [MEMORANDUM FROM JOSEPH M. COLBY TO P. A. WICK REGARDING STOCK OPTION] |
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| [CORRESPONDENCE] FROM MR. R.C. INGERSOLL TO LIEUTENANT COLONEL JOSEPH M. COLBY REGARDING DEMONSTRATION |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JOHN L. PIERCE REGARDING CONGRATULATIONS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO A.G. GILLESPIE REGARDING TANK DEPOT OPERATION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO N. DREYSTADT REGARDING PHOTOGRAPHS] |
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| [CORRESPONDENCE] FROM BRIGADIER GENERAL JOSEPH M. COLBY TO MR. NORMAN K. HAIG REGARDING APPRECIATION |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO J.E. TRAINER REGARDING LETTER OF MAY 8TH] |
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| [LETTER FROM UNDETERMINED TO COLBY, COLONEL JOSEPH M. REGARDING CHITWOOD CORRESPONDENCE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.M. ROSS REGARDING PHOTOGRAPH] |
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| [CORRESPONDENCE] FROM BRIGADIER GENERAL JOSEPH M. COLBY TO COLONEL T.J. SEIGLER REGARDING RETIREMENT |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO L.R. O'GRADY REGARDING COMMENDATION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W. EARL HALL REGARDING CONGRATULATIONS ON THE WAY YOUR COVERED THE MUSIC MAN DAY AT MASON CITY] |
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| [CORRESPONDENCE] FROM MAJOR GENERAL SIR LESLIE WILLIAMS TO BRIGADIER GENERAL JOSEPH M. COLBY REGARDING REPLY TO LETTER |
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| [CORRESPONDENCE] FROM LIEUTENANT COLONEL ROBERT H. BRIGHT TO COLONEL JOSEPH M. COLBY REGARDING PHOTOGRAPHS |
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