Abraham Lincoln actually said...
All officers and persons in the military, naval, and revenue services, or in any branch of the public service under the authority of the United States Government, are required, upon subpoena issued by direction of the said commissioners, to appear before them at such time and place as may be designated in said subpoena and to give testimony on oath touching such matters as may be inquired of by the commissioners, and to produce such books, papers, writings, and documents as they may be notified or required to produce by the commissioners, and as may be in their possession.
12/10/1864