This subseries comprises legal records, correspondence and other materials related to the legal disputes between Erickson and ONE, Incorporated, over the Milbank Estate, a real estate property that was purchased by Erickson in 1983 and subsequently used as the offices for ONE, Inc. and the Institute for the Study of Human Relations (ISHR). Monica Erickson, Reed Erickson's daughter, took over her father's estate as his mental health started to deteriorate while living in Mexico.