In this unique longitudinal examination of the "third sector" of the economy, the authors explore why, in a major U. S. metropolitan area, some nonprofit organizations grew while others shrank during the 14-year period of the study. The authors' striking conclusions contribute to an understanding of how organizations juggle commitments to donors, grantmakers, members, and service populations, while trying to keep costs down and worker morale high. In the face of these often conflicting tasks, the study demonstrates that it is ultimately an organization's coping strategies that keep it afloat.