| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.P. BOATWRIGHT REGARDING CAPTAIN ELMER E. GRAY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.P. BOATWRIGHT REGARDING AMPHIBIOUS MATERIEL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.L. STANELIFFE REGARDING COPY OF "AMERICAN TANKS AND AMERICAN TANK DESTROYERS"] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.J. PROSTON REGARDING DETROIT LAST WEEK] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.J. DAVIDSON REGARDING RECENT TRIP] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.J. DAVIDSON REGARDING PHOTOGRAPHS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.H. SHENKLE REGARDING MINUTES OF THE DECEMBER 2ND PARKING METER SUB-COMMITTEE MEETING] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. ROCKWELL, JR. REGARDING MEETING] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. ROCKWELL, JR. REGARDING ATTENDING LUNCHEON FOR MY RETIREMENT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. ROCKWELL REGARDING GENERAL ELECTRIC FINDINGS, PROJECT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. CRAWFORD REGARDING ROCKWELL PRODUCTS COMMITTEE MEETINGS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. CRAWFORD REGARDING ROCKWELL PRODUCTS COMMITTEE MEETINGS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. CRAWFORD REGARDING ROCKWELL EXPERIMENTAL BALL VALVE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. CRAWFORD REGARDING PITTSBURGH WEDDING RECEPTIONS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. CRAWFORD REGARDING BILL AT THE UNION LEAGUE CLUB, SUPERINTENDENT'S COCKTAIL PARTY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. BEASLEY REGARDING MODIFICATIONS OF STANDARD AND LIMITED PROCUREMENT MATERIEL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.F. BEASLEY REGARDING LETTER DATED 31 OCTOBER] |
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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 W.E. HOFFMAN REGARDING SNAP SHOTS] [WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO W.E. HOFFMAN REGARDING RECENT VISIT] [WITH ATTACHMENTS] |
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