In 1868, with Iowa fast outgrowing its only prison in Fort Madison, state lawmakers began thinking about building a new penitentiary. Several cities around the state vied for the prestige and economic benefits the new prison would provide. Anamosa, a rapidly growing town of 2,000 in east-central Iowa, was ultimately awarded the prize, in no small measure because of its proximity to some of the largest and finest dolomite limestone deposits in the...