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[[preprinted]] INTERNATIONAL EXHIBITION 1876. Board on Behalf U.S. Executive Departments, No. 1725 G St. N. W. Washington, D. C. [[/preprinted]] May 22^- [[preprinted]]187[[/preprinted]]6 Profr Baird Rep Smithsonian Sir. I have the honor to inclose four checks in payment of vouchers, three of them certified by "[[Hen?]] [[J?]] [[Eaton?]]" & one by yourself, as indicated in your letter of 20' inst. Respectfully J S Conrad Col & DO [[76]] blue pencil annotation