Information having been received that Caleb B. Smith, late Secretary of the Interior, has departed this life at his residence in Indiana, it is ordered that the executive buildings at the seat of the Government be draped in mourning for the period of fourteen days in honor of his memory as a prudent and loyal counselor and a faithful and effective coadjutor of the Administration in a time of public difficulty and peril.
The Secretary of State will communicate a copy of this order to the family of the deceased, together with proper expressions of the profound sympathy of the President and the heads of Departments in their irreparable bereavement.
ABRAHAM LINCOLN.
Abraham Lincoln, Executive Order Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202462