The Carroll Alsop House in Oskaloosa, Iowa, is one of seven Usonian houses Frank Lloyd Wright designed in the state and one of two built in the city. It resulted from a 1947 commission by two Oskaloosa families, for whom Wright planned both this house and the neighboring Lamberson House. Wright apprentice John deKoven Hill supervised the work, and builder Jim De Reus managed construction; both houses were finished in 1951. The house’s plan is basically L-shaped, though the carport gives it a T-like appearance. It embodies Wright’s Usonian ideal of simple, nature-oriented living for families of moderate means and was listed on the National Register of Historic Places in 1988.