President discusses with O. H. Browning and former Sen. Thomas Ewing (Ohio) case of Commodore Charles Wilkes guilty of unauthorized publication of letters of Sec. Welles, and case of Capt. Samuel Black. Browning, Diary.

President Lincoln "pardon[s]" and frees twenty-five "Indian prisoners now in confinement at Camp McClellan near Davenport Iowa." The men represent a portion of the Indians who have been confined since November 1862, as a result of the August 1862 Dakota uprising. Missionary Thomas S. Williamson and Special Commissioner to the Indians George E. H. Day wrote to Lincoln and urged him to release the prisoners. Day wrote, "[I]n the name of humanity [I] beg that you will . . . order them released and sent to take care of their starving families now perishing for want of food." Thomas S. Williamson to Abraham Lincoln, 27 April 1864; William P. Dole to Abraham Lincoln, 28 April 1864, both in Abraham Lincoln Papers, Library of Congress, Washington, DC; Order for Pardon of Sioux Indians, 30 April 1864, CW, 7:325-26.

F. B. Carpenter introduces Lincoln to Elizabeth Cady Stanton, leader in women's rights movement, and her brother-in-law, Samuel Wilkeson, head of New York "Tribune" bureau in Washington. Carpenter, Six Months, 101.

After midnight Lincoln visits offices of John Nicolay and John Hay to show caricature by Thomas Hood and enjoy laugh. Hay, Letters and Diary.

Acknowledges invitation to attend Grand Musical Festival in Philadelphia on Wednesday, May 4, 1864. "I shall be most happy to be present at an entertainment which promises so much, especially as it is in aid of so beneficent a charity as that in which you are interested, if my engagements next week will allow it." Abraham Lincoln to James R. Fry, 30 April 1864, CW, 7:323-24.

Writes Gen. Grant and expresses "entire satisfaction with what you have done up to this time, . . . If there is anything wanting which is within my power to give, do not fail to let me know. And now with a brave Army, and a just cause, may God sustain you." Abraham Lincoln to Ulysses S. Grant, 30 April 1864, CW, 7:324-25.