The market for this is definitely employers who have a liberal viewpoint and who wish to know the relative merits of the two organizations, the C.I.O. and the A. F. of L. But the angle is so decidedly biased in favor of the C. I. O. that it should be offset by some other book on the subject. Not for anyone with a closed mind -- nor for the average capitalistic sympathizer --for this new book on American labor and the historical development of Unions from the early days of the Knights of Labor to the great upheaval and the rise of the C. I. O., gives a most comprehensive picture of the inside story of the break in the labor ranks and complete details of how the C. I. O. won so many victories by strikes, (including sit-down,) wire-pulling and diplomacy. The author uses a surgeon's knife in laying open the A. F. of L. and its leaders. His picture of Lewis the man is revealing as to his mental and physical powers and his faults and foibles. Written in a smooth newspaper fashion that makes easy reading. The author is the labor editor of The New York Evening Post and has behind him twenty years of first hand reportorial experience the country over covering labor fights.