| [CORRESPONDENCE FROM RALPH A. LINCOLN TO MAJOR GENERAL S. D. STURGIS JR. REGARDING LINCOLN'S RETIREMENT] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO MAJOR GENERAL S. D. STURGIS JR. REGARDING LINCOLN'S RETIREMENT] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO LOUIS J. RUMAGGI REGARDING CATCHING UP WITH ATTACHMENT] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO JOSEPH C. MEHAFFEY REGARDING DAILY LIFE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO JOSEPH C. MEHAFFEY REGARDING DAILY LIFE] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO JESSE L. LEWIS REGARDING A VISITATION PLAN] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO JAMES B. CHUBBUCK REGARDING A COMMENDATION FROM H. A. DRUM] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO ENGINEERS IN THE EITHER UNITED STATES ARMY IN KOREA REGARDING SUGGESTIONS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO EDWIN J. MESSINGER REGARDING AN UPCOMING VISIT OF WEST POINT CADETS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO EDWIN J. MESSINGER REGARDING AN UPCOMING VISIT OF WEST POINT CADETS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO EDWIN J. MESSINGER REGARDING AN UPCOMING VISIT OF WEST POINT CADETS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO EDWIN J. MESSINGER REGARDING AN UPCOMING VISIT OF WEST POINT CADETS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO EDWIN J. MESSINGER REGARDING AN UPCOMING VISIT OF WEST POINT CADETS] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO DR. T. CRAIG MCKEE REGARDING CONSTRUCTION ON LOCK AND DAM NO 9] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO BRIGADIER GENERAL C. R. SMITH REGARDING A REQUEST FOR LINCOLN'S CAREER SUMMARY] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN TO A COLLECTOR OF THE INTERNAL REVENUE REGARDING A CHECK] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN REGARDING MONEY FOR TRAVEL] |
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| [CORRESPONDENCE FROM RALPH A. LINCOLN REGARDING A LETTER OF RECOMMENDATION FOR JAMES A. WAUGH] |
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| [CORRESPONDENCE FROM R. T. WARD TO RALPH A. LINCOLN REGARDING WORK INSTRUCTIONS] |
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| [CORRESPONDENCE FROM R. T. WARD TO RALPH A. LINCOLN REGARDING RESPONSES TO A PREVIOUS LETTER] |
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