| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY N. MARSH REGARDING RESPONSE TO 9 NOVEMBER LETTER] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY N. MARSH REGARDING CONGRATULATIONS ON YOUR BEING AWARDED THE JOHN H. RICE GOLD MEDAL] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY N. MARSH REGARDING APPRECIATION FOR HOSPITALITY][WITH ATTACHMENTS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY MARSH REGARDING THANKS FOR YOUR LETTER COVERING THE SURVEY IN EUROPE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY L. JONES REGARDING PHOTOGRAPH] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY HUND REGARDING HOLIDAY GREETINGS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY HOWARD REGARDING COLLECTION OF STORIES] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY H. HOWARD REGARDING PROMPT ACTION] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY D. ROLPH REGARDING PERSONAL UPDATE] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY D. ROLPH REGARDING ARTICLE FROM THE SEPTEMBER ISSUE OF KARTING WORLD] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY C. THAYER REGARDING STATUS OF ACTIVITIES] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HENRY C. THAYER REGARDING ACTIVITIES] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HARRY A. MOORE REGARDING THANK YOU FOR COURTESIES DURING STAY] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HAROLD GRAMPP REGARDING STATUS OF THE COMPACTOOL PROGRAM] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HAROLD GRAMPP REGARDING NAMES OF THE MANAGER OF THE ROF AT GLASGOW AND THE MANAGER OF THE IMPERIAL CHEMICAL INDUSTRIES AT POWFOOT] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO HARGADINE REGARDING THANKS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.W. GOULDTHOWRPE REGARDING TECHNICAL OBSERVERS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.W. GOULDTHORPE REGARDING VISIT IN NEW YORK] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.W. GOULDTHORPE REGARDING THANKS] |
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| [CORRESPONDENCE FROM JOSEPH M. COLBY TO H.W. GOULDTHORPE REGARDING PHOTOSTAT] [WITH ATTACHMENTS] |
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