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[[stamped]] May 25 1876 [[/stamped]] [[preprinted]] INTERNATIONAL EXHIBITION 1876. Board on Behalf U.S. Executive Departments, No. 1725 G St. N. W. Washington, D. C. [[/preprinted]] May 24 1876 Profr Baird Smithsonian Instn Sir I have the honor to inclose four checks in payment of your vouchers. Very respectfully J S Conrad Col & DO [[blue pencil annotation]] 78 [[/blue pencil]]