Seward, W. H. 1. (1861). The Union: Speech of William H. Seward, in the Senate of the United States, on presenting the New York union petition, January 31, 1861. Washington: Printed at the office of the Congressional globe.

Seward, William H. 1801-1872. The Union: Speech of William H. Seward, in the Senate of the United States, On Presenting the New York Union Petition, January 31, 1861. Washington: Printed at the office of the Congressional globe, 1861.

Seward, William H. 1801-1872. The Union: Speech of William H. Seward, in the Senate of the United States, On Presenting the New York Union Petition, January 31, 1861. Washington: Printed at the office of the Congressional globe, 1861.