Several famous people are associated with these Calhoun County historic places including Perry C. Holdoegel and Peter Smith.
Some of the country's most noteable architects helped create the Calhoun County places including James Barney Marsh, James B. Marsh, Dr. Charles Knapp, Damon & O'Meara, Iowa Bridge Co., Bes Moines Bridge & Iron Works, Neumann,Arthur H., & Co., W.F. Gernanth, Nelson Construction Co., Paige,A.F.,Co. and Builder. Prominent architectural styles found in Calhoun Country are Classical Revival, Italianate and Gothic.