[Patent for Matthias Baldwin's combination of the steam whistle and the boiler]
May 28, 1846
Buchanan, James, 1791-1868
Signed by James Buchanan as Secretary of State. Countersigned by Edmund Burke as United States Commissioner of Patents. Baldwin's written description of the combined steam whistle/boiler is signed by E. W. C. Green and John White as witnesses...
GLC00063