Numerous network studies demonstrate that interlocking directors unite corporations in the United States into a tight-knit corporate community (e.g., Sonquist and Koenig, 1975; Mariolis, 1975; Mizruchi, 1982). In addition, nonnetwork studies of foundations, universities, and other nonprofit organizations suggest that corporate officers and directors play a large role in the governance of such institutions (e.g., Hartnett, 1969; Dye, 1976; Useem et al., 1976; Salzman and Domhoff, 1980; Useem, 1981). However, there are no studies that cast light on the structural position of nonprofit institutions in relation to the well-established corporate network.