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[[start page]] [[upside down compared to handwritten note--numerical calculations]] [[subtraction]] 56.208.23 50.948.83 [[line]] 5.259.40 [[strikethrough]] 56. [[/strikethrough]] [[subtraction]] 17,500 5,259 [[line]] 12,241 [[end page]] [[start page]] ^[[74] [[preprinted]] INTERNATIONAL EXHIBITION 1876. Board on Behalf U.S. Executive Departments, No. 1725 G St. N. W. Washington, D. C. ^[[May 17]] 187^[[6]] [[/preprinted]] Profr S.F. Baird Smithsonian Instn Sir- I have the honor to inclose seven (7) checks in payment of your vouchers. Very respectfully J S Conrad Col & DO