Kenyon L. Butterfield, President, and to Professor Newell L. Sims, for
help on the chapters dealing with social problems.

A number of teachers in the West kindly helped with various portions
of the book. At the University of Wisconsin the author is under
obligations to Professors John R. Commons and Donald D. Lescohier of
the Department of Economics.

A. S. Roberts of the University of Illinois read various of the
historical chapters.

At the University of Iowa, the author is especially grateful for the
help of Professor F. E. Horack of the Department of Government.

Professor Charles Ellwood of the University of Missouri read and
criticized the Chapter on the Family.

Especially valuable were the suggestions which Professor James E. Le
Rossignol of the University of Nebraska offered with respect to the
Chapters on Socialism.

At Leland Stanford University the author acknowledges his obligations
to Professor Eliot Jones of the Department of Economics.

In the United States Department of State, the author is indebted to
Arthur N. Young for a critical reading of the Chapter on Single Tax.

In the United States Department of Labor, the author is under
obligations to John B. Andrews for many suggestions on the Chapter on
Industrial Relations.