Diagrams showing the Influence of Temperature on the Upper and Lower Member of a Rib of Centeral Arch
Gerhard, W. P.
pictures (two-dimensional representations)
St. Louis Mercantile Library
Woodward, Calvin M. A History of the St. Louis Bridge. St. louis: G.I. Jones and Company, 1891.
TwainEconomic DevelopmentLaborSt. Louis Bridge1835--1910