The Cedar Rock House, also known as the Lowell Walter House was completed in 1945 in Quasqueton, Iowa. Nearly everything at Cedar Rock bears the architect's imprint. Wright designed the furniture, selected the carpets, chose the draperies and even picked out the accessories. Cedar Rock was begun in 1948 and completed in 1950. It's roof and floors are concrete; the walls are brick, glass and walnut. Of all the Wrights designs in Iowa, Cedar Rock is the only home chosen by Wright to bear his coveted signature tile. When Walter died in August of 1981, he and his wife, Agnes, left their home to the Iowa Conservation Commission and the people of Iowa.