38°37′34″N 90°11′15″W / 38.62612°N 90.187379°W
The Merchants Exchange Building was a building at Third Street[1] at Chestnut and Pine in St. Louis, Missouri, from 1875 to 1958, that housed the St. Louis Merchants Exchange and hosted the 1876 Democratic National Convention.
It is the legitimate successor of the St. Louis Chamber of Commerce, organised in 1836, and incorporated January, 1837. It owns and occupies a magnificent building, occupying two-thirds of a square, fronting 239 feet on Third Street by a depth of 222 feet. In the western part of the building is located the grand hall, where the daily meetings of the exchange are held, and where business is transacted from 9.30 a.m. to 1.15 p.m.