United States Statutes at Large/Volume 4/18th Congress/1st Session/Chapter 29
Chap. XXIX.—An Act to define the boundary line between the Edwardsville and Springfield land districts, in the state of Illinois.
The country lying between the Illinois and Mississippi rivers, &c. to be attached to, &c. the land district of Edwardsville, &c.Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That all that tract of country lying between the Illinois and Mississippi rivers, and south of the base line of the military surveys, be, and the same is hereby, attached to, and made a part of, the land district, the office of which is located at Edwardsville; and all that tract of country lying between the said rivers, and north of the said base line, be, and the same is hereby, attached to, and made a part of, the land district, the office of which is established at Springfield, in the county of Sangamo.
Approved, March 16, 1824.