The Treaty Between the United States and Mexico: The Proceedings of the Senate Thereon, and Message of the President and Documents Communicated Therewith : the Messages, with Correspondence Between the Executive Department, General Scott and Mr. Trist, and Other Papers and Proceedings of the Senate in Relation Thereto : from which the Injunction of Secresy Has Been Removed

The first American printing of the Treaty of Guadalupe Hidalgo, ending the Mexican War and adding California and much of the Southwest to the United States. The treaty between the United States and Mexico was signed in February 1848, but its provisions kept a secret while the U.S. Senate debated ratification of the document. This official Senate printing of the treaty amounts to a virtual history of the negotiations between the United States and Mexico, and includes pages of previously- secret correspondence between the American government and its agents, Nicholas Trist and John Slidell. Several Mexican documents are also included. In the treaty, agreements were reached for the withdrawal of American troops from Mexico, the payment of Mexican claims, and the formal cession of territory (the U.S. had already occupied all of the land). The theoretical boundaries were set out and arrangements for boundary commissioners were made. By this treaty the U.S. obtained an addition of land equalled in size only by the Louisiana and Alaska purchases. A fundamental piece of Western Americana.