Young, Ammi B(urnham) (1798–1874)

US architect. Born in Lebanon, New Hampshire, he designed the Vermont State House, Montpelier in 1832, and the Customs House, Boston, Massachusetts (1837–47). As the first supervising architect of the Treasury Department (c. 1852–62) he designed many Greek Revival and Italianate public buildings; although traditional in his design, he pioneered the use of iron in construction.