President interviews Jonathan Haines, holder of patent on harvesting machine, and gives him letter of introduction. Abraham Lincoln to David P. Holloway, 4 March 1863, CW, 6:124.

Congratulates Miguel San Roman on election to presidency of Republic of Peru. Abraham Lincoln to Miguel de San Roman, 4 March 1863, CW, 6:124.

Sends for Asst. Sec. Fox to explain certain dispatches. Fox, Diary, Gist-Blair Family Papers, Library of Congress, Washington, DC.

Consults with Postmaster Gen. Blair about problems for colonizing Negroes. Blair to Lincoln, 5 March 1863, Abraham Lincoln Papers, Library of Congress, Washington, DC.