| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING EDITOR OF ARMY ORDNANCE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO EDWIN W. PIBURN REGARDING ACT OF CONGRESS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO A.E. CLEVELAND REGARDING ARRIVED SAFELY] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM E.J. DAWLEY TO JOSEPH M. COLBY REGARDING THANK YOU] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING HOW TIME FLIES] |
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| [CORRESPONDENCE FROM H.S. COLBY TO JOSEPH M. COLBY REGARDING COMPLETED THE ASSIGNMENT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO RICHARD Z. CRANE REGARDING MISSED YOU] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO GEORGE M. DEAN REGARDING R.J. GRONDONA] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING PLANS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO VOLLMER W. FRIES REGARDING INTEREST IN DEVELOPMENT] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO C.L. SCOTT REGARDING DELIGHTED] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO E.J. HUNT REGARDING ATTACHED LETTER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM J.A. ULIO TO J.H. BURNS REGARDING LEGION OF MERIT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JACK REGARDING REQUEST] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING LETTER 7 AUGUST] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO T.H. ALLEN REGARDING LETTER OF 2 AUGUST] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO UNDETERMINED REGARDING MEDIUM TANKS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO S.B. RITCHIE REGARDING H.F. BLANKENSHIP] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.M. HARRINGTON REGARDING TWO PHOTOGRAPHS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO UNDETERMINED REGARDING INVITATION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO DAVID FISHMAN REGARDING LETTER OF 29 JULY] |
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| [CORRESPONDENCE FROM H.M. HARRINGTON TO JOSEPH M. COLBY REGARDING TWO PHOTOGRAPHS] |
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| [CORRESPONDENCE FROM W.J. BEASLEY TO JOSEPH M. COLBY REGARDING REPORT OF ROBERTS MISSION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO GEORGE W. HOWARD REGARDING LETTER OF 27 JULY] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO E. GRAY REGARDING LIGHT TANK] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO DAVID FISHMAN REGARDING LETTER OF 29 JULY] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO EDWIN W. PIBURN REGARDING LETTER] |
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| [CORRESPONDENCE FROM F.S. DELLENBAUGH TO JOSEPH M. COLBY REGARDING NOTE TO THANK YOU] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO T.H. ALLEN REGARDING SPARE PARTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO ALBERT W. WALDRON REGARDING VISIT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO CHESTER H. LANG REGARDING LETTER] |
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| [CORRESPONDENCE FROM DAVID FISHMAN TO JOSEPH M. COLBY REGARDING DESIGN UNIT] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING INVENTION] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM J.H. BURNS TO JOSEPH M. COLBY REGARDING LETTER OF 15 JULY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JACK REGARDING LETTER OF 14 JULY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.A. WEAVER REGARDING MAJOR BLANKENSHIP] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM T.H. ALLEN TO JOSEPH M. COLBY REGARDING HELP] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO WM. A. BORDEN REGARDING TRIP] |
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| [FORM] "NOTICE OF CHANGE OF ADDRESS" |
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| [CORRESPONDENCE FROM C.H. LANG TO JOSEPH M. COLBY REGARDING ARMY ORDNANCE] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO S.B. RITCHIE REGARDING MAJOR BLANKENSHIP] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.P. BOATWRIGHT REGARDING LETTERS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO R.L. MAXWELL REGARDING CONGRATULATIONS] |
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| [CORRESPONDENCE FROM WM. A. BORDEN TO JOSEPH M. COLBY REGARDING PICTURES] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JAMES H. BURNS REGARDING CERTIFICATE] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JAMES H. BURNS REGARDING CERTIFICATE FOR SIGNATURE] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JACK TO JOSEPH M. COLBY REGARDING APPOINTMENT TO WEST POINT] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM E.W. PIBURN TO JOSEPH M. COLBY REGARDING LETTER OF JULY 5] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO REGINALD ABRAHAM REGARDING DEATH OF DAUGHTER] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.P. BOATWRIGHT REGARDING LETTERS OF APPRECIATION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO O.B. WHITTAKER REGARDING MODEL GYRO] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO EDWIN W. PIBURN REGARDING LEGION OF MERIT] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO FRANK R. WILLIAMS REGARDING DEVELOPMENT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO CAROL COLBY REGARDING ABERDEEN PROVING GROUND] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JANICE MARGARET COLBY REGARDING TRIP TO ABERDEEN] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.H. SIMPSON REGARDING ARMORED SCHOOL MANUAL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO E.H. HARRISON REGARDING GUN MOTOR CARRIAGE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO E.H. HARRISON REGARDING LETTER OF 21 JUNE] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM P.M. ROBINETT TO JOSEPH M. COLBY REGARDING LETTER OF 24 JUNE] |
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| [CORRESPONDENCE FROM GRACE M. BUTCHER TO E.W. PIBURN REGARDING COLONEL COLBY] |
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| [CORRESPONDENCE FROM GEORGE H. SIMPSON TO JOSEPH M. COLBY REGARDING DRIVER'S MANUEL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.M. ROSS REGARDING LETTER OF 21 JUNE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO C.H. MORGAN REGARDING LETTER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.H. FROEBEL REGARDING CONGRATULATIONS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO P.M. ROBINETT REGARDING RETURNED TO MY OFFICE] |
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| [CORRESPONDENCE FROM WALTER VENNING TO JOSEPH M. COLBY REGARDING THANK YOU] |
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| [CORRESPONDENCE FROM P.M. ROBINETT TO JOSEPH M. COLBY REGARDING VISIT TO DETROIT] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.E. SUMMERBELL REGARDING LAST FALL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO DELMAR G. ROOS REGARDING CONTRACTS] |
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| [CORRESPONDENCE FROM DELMAR G. ROOS TO JOSEPH M. COLBY REGARDING VISIT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO O.R. SKELTON REGARDING TELEPHONE CONVERSATION] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO AVAKIAN REGARDING NOTE OF 24 MAY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO G.M. BARNES REGARDING RECOMMENDATIONS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.T. WOOLSON REGARDING LETTER OF 25 MAY] |
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| [CORRESPONDENCE FROM E.W. PIBURN TO JOSEPH M. COLBY REGARDING RE-SUBMIT] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOHN W.N. SCHULZ TO JOSEPH M. COLBY REGARDING LETTER OF MAY 6] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING NOTE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JOHN EIEL REGARDING TRIP TO FLORIDA] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO A.H. GATEHOUSE REGARDING LETTER OF 15 MAY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.W. GOULDTHORPE REGARDING THANKS] |
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| [CORRESPONDENCE FROM H.W. GOULDTHORPE TO JOSEPH M. COLBY REGARDING A FEW DAYS AGO] |
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| [CORRESPONDENCE FROM A.H. GATEHOUSE TO JOSEPH M. COLBY REGARDING C.T.20] |
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| [CORRESPONDENCE FROM UNDETERMINED TO JOSEPH M. COLBY REGARDING REPLY TO LETTER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM J.A. ULIO TO PIBURN REGARDING RECOMMENDATION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO R.E. LEWIS REGARDING LETTER OF 4 MAY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO S.C. PACE REGARDING GOOD WORK] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO C.H. MORGAN REGARDING FILE AND NOTES] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO JOHN W.N. SCHULZ REGARDING THANK YOU] |
|
| [CORRESPONDENCE FROM R.E. LEWIS TO JOSEPH M. COLBY REGARDING LEGION OF MERIT] |
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| [MANUSCRIPT] "COLONEL COLBY'S DINNER" |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO ARMORED BOARD REGARDING FORT KNOX] |
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| [CORRESPONDENCE FROM WILLIAMS TO JOSEPH M. COLBY REGARDING CAPTAIN TAUSS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO GEORGE W. AKERS REGARDING UNFAVORABLE REPLY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO E. GRAY REGARDING PERSONAL LETTER] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO EUGENE FRANKE REGARDING LOSE YOU FROM OUR DEVELOPMENT TEAM] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO L.H. CAMPBELL REGARDING LETTER OF CONGRATULATIONS] |
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| [CORRESPONDENCE FROM M.K. BARROLL TO JOSEPH M. COLBY REGARDING TRIP OVERSEAS] |
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| [CORRESPONDENCE FROM L.H. CAMPBELL TO JOSEPH M. COLBY REGARDING ADVISED BY WAR DEPARTMENT] |
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| [CORRESPONDENCE FROM E.W. PIBURN TO JOSEPH M. COLBY REGARDING PROMOTION] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM EUGENE FRANKE TO JOSEPH M. COLBY REGARDING SERVING ELEVEN MONTHS] |
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| [CORRESPONDENCE FROM L.H. CAMPBELL TO JOSEPH M. COLBY REGARDING WORK] [WITH ATTACHMENTS] |
|