United States. Senate <br/><br/>
Diplomatic History of the Panamá Canal: Correspondence Relating to the Negotiation and Aplication of Certain Treaties on the Subject, of the Construction of an Interoceanic canal, and Accompanying Papers 

 - Washington :   Government Printing Office,   1914. 
 - 602 p. ;   18 cm. 
 - Senate document ;   474 .