| [CORRESPONDENCE FROM THE ADJUTANT GENERAL TO RALPH A. LINCOLN REGARDING PROMOTION] |
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| [CORRESPONDENCE FROM T. CRAIG MCKEE TO CAPTAIN R.A. LINCOLN REGARDING THANK YOU FROM KITTANNING KIWANIS CLUB] |
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| [CORRESPONDENCE FROM T. A. WEADOCK TO RALPH A. LINCOLN REGARDING CREDIT ELIGIBILITY] |
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| [CORRESPONDENCE FROM SANDERFORD JARMAN TO THE COMMANDING GENERAL OF THE EASTERN DEFENSE COMMAND AND FIRST ARMY REGARDING A LETTER IN LIEU OF EFFICIENCY REPORT] |
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| [CORRESPONDENCE FROM S. D. STURGIS JR. TO RALPH A. LINCOLN REGARDING THE DEDICATION OF CONEMAUGH DAM] |
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| [CORRESPONDENCE FROM S. D. STURGIS JR. TO RALPH A. LINCOLN REGARDING RETIREMENT] |
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| [CORRESPONDENCE FROM S. D. STURGIS JR. TO RALPH A. LINCOLN REGARDING A PERFORMANCE] |
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| [CORRESPONDENCE FROM S. D. STRUGIS JR. TO RALPH A. LINCOLN REGARDING LINCOLN'S RETIREMENT] |
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| [CORRESPONDENCE FROM ROBERT N. HULLEY TO ALUMNUS REGARDING A PASS] |
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| [CORRESPONDENCE FROM ROBERT A. BOTSFORD JR. TO RALPH A. LINCOLN REGARDING COMPANY PROPERTY ACCOUNTING WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO WILLIAM E. BRAENDLE REGARDING A COMMENDATION FROM H. A. DRUM] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THOMAS B. SIMPSON REGARDING A COMMENDATION FROM H. A. DRUM] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE DISTRICT ENGINEER REGARDING A LEAVE OF ABSENCE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE DISTRICT ENGINEER REGARDING A LEAVE OF ABSENCE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE DISTRICT ENGINEER REGARDING A LEAVE OF ABSENCE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE CHIEF OF ENGINEERS REGARDING A LEAVE OF ABSENCE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE CHIEF OF ENGINEERS REGARDING A LEAVE OF ABSENCE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE BUREAU OF MOTOR VEHICLES REGARDING A CAR TITLE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE ADJUTANT GENERAL REGARDING A STATEMENT OF SERVICE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO THE ADJUTANT GENERAL REGARDING A STATEMENT OF SERVICE] |
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