June 20, 1861
STATE DEPARTMENT
The LIEUTENANT-GENERAL COMMANDING THE ARMIES OF THE UNITED STATES:
You or any officer you may designate will, in your discretion, suspend the writ of habeas corpus so far as may relate to Major Chase, lately of the Engineer Corps of the Army of the United States, now alleged to be guilty of treasonable practices against this Government.
ABRAHAM LINCOLN.
By the President:
WILLIAM H. SEWARD.
Abraham Lincoln, Executive Order Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202391