XV111 



INTRODUCTION 



To Mr. Drayton I owe many acknowledgments for his constant and untiring zeal 

 in all the departments of the Expedition, not only during the continuance of the 

 Expedition, but since its return, while acting in concert with me in preparing the 

 illustrations of the Narrative for the press. I cannot but congratulate myself that 

 we should have been so fortunate in having one attached to the Expedition so well 

 adapted to encounter, and from his former experience to overcome, the difficulties 

 we have had to contend with in the progress of the publication. 



The country is particularly indebted to the Joint Committees of the successive 

 Congresses* who have had the execution of the law for the publication of the 

 results of the Exploring Expedition entrusted to them. They have afforded me 

 all the assistance I could desire ; and through the facilities obtained, I have been 



* Members of the Joint Committee on the Library of Congress, at the second Session of 

 the Twenty-seventh Congress : 



SENATORS. 



Hon. William C. Preston, Chairman, 

 Benjamin Tappan. 

 Rufus Choate. 



At the Third Session of the Twenty-seventh Congress 

 Hon. William Woodbridge, Chairman, 

 Benjamin Tappan, 

 Rufus Choate. 



At the First Session of the Twenty-eighth Congress : 

 Hon. Rufus Choate, Chairman, 

 Benjamin Tappan, 

 John M. Berrien. 



At the Second Session of the Twenty-eighth Congress . 

 Hon. Rufus Choate, Chairman, Mass. 

 Benjamin Tappan, Ohio, 



Alfred Pearce, Md. 



At the First Session of the Twenty-ninth Congress : 

 Hon. James A. Pearce, Chairman, Md. 

 Dixon H. Lewis, Ala. 



Joseph W. Chalmers, Mis 



At the Second Session of the Twenty-ninth Congress : 

 Hon. James A. Pearce, Chairman, Md. 

 Joseph W. Chalmers. Miss. 



Dixon H. Lewis. Ala. 



At the First Session of the Thirtieth Congress : 

 Hon. James A. Pearce, Chairman, Md. 

 Jefferson Davis, Miss. 



James M. Mason, Va. 



REPRESENTATIVES. 



Hon. Joseph L. Tillinghast, 

 John B. Aycrigg, 

 Thomas D. Sumter. 



Hon. Joseph L. Tillinghast, 

 John B. Aycrigg, 

 Thomas D. Sumter. 



Hon. Edmund Burke, 

 George P. Marsh, 

 William B. Maclay. 



Hon. Edmund Burke, N. H- 

 George P. Marsh. Vt. 

 Lucius Lyon. 



Hon. Richard Brodhead, Pa. 

 Wm. W. Campbell, N. Y. 

 Edmund W. Hubard, Va. 



Hon. Richard Brodhead, Pa. 

 Wm. W. Campbell, N. Y. 

 James M'Dowell, Va. 



Hon. Wm. B. Preston, Va. 

 Henry C. Murphy, N. Y. 

 J. G. Palfrey, Mass. 



