| [CORRESPONDENCE FROM CRAWFORD F. SAMS TO JOSEPH M. COLBY REGARDING APPRECIATION] |
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| [CORRESPONDENCE FROM COLONEL S.B. RITCHIE TO COLONEL JOSEPH M. COLBY REGARDING TALK BEFORE THE WASHINGTON ACADEMY OF SCIENCE] |
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| [CORRESPONDENCE FROM COLONEL LOUIS A. HAMMACK TO COLONEL JOSEPH M. COLBY REGARDING REQUEST FOR CAR] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO WILLIAM TAUSS REGARDING INVITATION TO PERMANENTLY JOIN THE ORGANIZATION][WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO WILLIAM M. SHEEHAN REGARDING MEMBERSHIP APPLICATION FOR THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO WILLIAM J. BIRD REGARDING INVITATION TO BE YOUR GUEST AT THE ANNUAL MEETING OF THE AMERICAN ORDNANCE ASSOCIATION] [WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO W.L. PRINGLE REGARDING INVITATION TO THE S.A.E. DINNER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO W.E. HOFFMAN REGARDING TELEPHONE CONVERSATION, INVITATION TO THE ARMY ORDNANCE ASSOCIATION DINNER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO W.E. HOFFMAN REGARDING COLONEL S.A. DANIEL ARRIVING] [WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO UNDETERMINED REGARDING COPIES OF CORRESPONDENCE] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO THE ADJUTANT, DETROIT ARSENAL REGARDING 20 OCTOBER 1946 DIRECTIVE] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO SYLVIA THOMAS REGARDING LETTER DATED 1 JANUARY 1945] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO SYLVIA THOMAS REGARDING ANNUAL MEETING OF THE SOCIETY OF AUTOMOTIVE ENGINEERS ON 11 [JOURNAL ARTICLE] N1945] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO SUMPTER M. SPEAKE REGARDING RECENT SURGERY] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO RODNEY STEPHENS REGARDING CONSIDERATION OF A NEW TRACK-LAYING AMPHIBIOUS CARGO CARRIER] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO RICHARD FOX REGARDING HOLIDAY GREETINGS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO R.C. SACKETT REGARDING WALKIE-TALKIE] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO R.C. SACKETT REGARDING THANK YOU FOR YOUR LETTER OF 30 DECEMBER 1944] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO R. C. GOLT REGARDING PROGRESS IN DEVELOPING COMMERCIAL LINE OF TRANSMISSIONS] |
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| [CORRESPONDENCE FROM COLONEL JOSEPH M. COLBY TO PAUL M. NETZER REGARDING HOLIDAY GREETINGS] |
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