The authors are deeply grateful to Richard E. Townsend, W. Lloyd Keepers, J. Francis Driscoll, Lester S. Levy, Fletcher Hodges, Jr., Harry Stone, Arthur Billings Hunt, Kenneth Rose, Raymond S. Wilkins, Edward Abbe Niles, Sam Manus; to Mrs. Clara deWindt, Mrs. Marian Sadtler Hornor, Mrs. Ethel C. Leahy; and to Edith A. Wright, Josephine A. McDevitt and Dorothy Blackmar for information regarding "high spots" in their collections, and other valuable help. Our thanks are also due to Eleanore D. McNeill and Sylvia Horn for their assistance.
Dr. Harold Spivacke and Edward N. Waters of the Music Division of the Library of Congress, Dr. Carleton Sprague Smith and Mrs. Amy Sinclair of the Music Division of the New York Public Library, Clarence S. Brigham of the American Antiquarian Society, F. H. Price of the Free Library of Philadelphia, Richard G. Appel of the Music Department of the Boston Public Library, and Prof. Wm. Treat Upton of Oberlin College have made available particularly valuable information in connection with the earlier material, before 1820.
We are greatly indebted to The Oliver Ditson Company and William Arms Fisher , publisher and author, respectively, of "One Hundred And Fifty Years of Music Publishing In The United States" for permission to use information from this book; also to the Magazine ANTIQUES and to Edith A. Wright and Josephine A. McDevitt for the list of "Lithographers And Artists Working On American Sheet Music Before 1870," from the March 1933 issue of that magazine.
It is really a privilege to thank The Rosenbach Co. of Philadelphia for permission to reproduce the unusual broadside "Americans To Arms."
Malcolm N. Stone has been most generous in allowing the use of his entire collection in various ways, has given freely of his time, and has made many valuable suggestions. Sam M. Lewis has granted kind permission to use his poem "Portrait of Stephen Foster." .
And, finally, we pay tribute to the late Joseph Muller, of the New York Public Library, a great musicologist, who so willingly gave of his vast store of knowledge to his collector friends over a long period of years.
HARRY DICHTER ELLIOTT SHAPIRO