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My dear Sir Allow me to thank you very cordially for the copy of your work on ``Insects Injurious to Vegetation'' which you have had the kindness to send me, and believe me Yours very sincerely
Charles L. Flint Esq A. LINCOLN
[1] LS, RPB. This letter, in John Hay's handwriting but signed by Lincoln, is incorrectly dated May 18, 1862, in the Complete Works (NH, VII, 170). Charles L. Flint was secretary of the Massachusetts State Board of Agriculture and became an authority on agricultural subjects, later serving as president of Massachusetts Agricultural College.