A MODEL OF A STEAM TRAP, Patent No. 114..., Patentee James H. Blessing, Albany, New York, Patented May 25, 1871, constructed of iron and bronze, engraved "JAMES H. BLESSING./ALBANY, N.Y./1870"-- 11½in. high

細節

A MODEL OF A STEAM TRAP, Patent No. 114..., Patentee James H. Blessing, Albany, New York, Patented May 25, 1871, constructed of iron and bronze, engraved "JAMES H. BLESSING./ALBANY, N.Y./1870"-- 11½in. high

來源

O. Rundle Gilbert Collection