Alfred Caldwell
In 1965 he taught at Virginia Polytechnic Institute and the following year he began teaching at the University of Southern California and stayed till 1973.Due to the subtleness of his planting designs and the live nature of landscape materials, many of Caldwell's projects have fallen into disrepair as the result of improper maintenance and modifications.The Lily Pool suffered the same neglect and misuse for many years, but was rehabilitated between 1998 and 2002 pursuant to a plan prepared by Wolff Landscape Architecture.Caldwell stressed the importance of orientation for passive solar design, as well as integration of the structure into the landscape.In the 1940s, Caldwell began construction of his own house near Bristol, Wisconsin, along with planting nearly 30 acres (120,000 m2) of eastern hardwood forest.