Soviet - American relations, 1917 - 1920; Decision to intervene.

This volume is a direct continuation of the first volume of this series, which appeared under the title Russia Leaves the War. This being the case, there is no need to repeat or to expand the prefatory remarks which introduced the first volume. Author must, however, reiterate here the expression of my indebtedness to the librarians of the Institute for Advanced Study and of Fire
stone Library at Princeton University; to the several sections of the National Archives of the United States which have aided my research on this volume; to the Manuscripts Division of the Library of Congress; to the Missouri Historical Society and the State Historical Society of Wisconsin; to the Hoover Library of War and Peace at Stanford University, the Harper Library at the University of Chicago, and the Yale University Library.

In addition, author must add a word of gratitude to the Archive of Russian and Eastern European History and Culture and to the Oral History Research Office, both in the Butler Library at Columbia Uni versity in New York, where I received particularly valuable help in connection with this second volume. Author bear a special debt of appreciation to the families of David R. Francis, Allen Wardwell, Thomas D. Thacher, DeWitt C. Poole, and Arthur Bullard for making available memoir material used in this volume.

To Sir Llewellyn Woodward and to the Honorable Norman. Armour I am indebted for their kindness in reading large portions of the manuscript and giving me their valuable comments, for the utilization of which I alone bear the responsibility.