A series of studies by different authors, prepared for and under the direction of the Commission.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations.

Thus, the volume contains materials that the historical student could not gather for himself except at the expenditure of much time and trouble. Dorr is an Assistant Professor of Political Science at the University of Michigan.