Louisiana was founded in 1818, and by 1866 it was the 12th largest city in Missouri. The city's proximity to the Mississippi River fostered lumber, tobacco, and agriculture industries and lured river captains and others whose commerce depended on the river. In 1873, another form of transit bolstered the city with the construction of the Chicago & Alton Railroad Bridge. The third bridge built across the Mississippi, it remains in use today. Pardee...