President interviews Gen. Sigel regarding assignment. N.Y. Herald, 10 May 1863.

Receives report of Capt. Diller that 1,000 pounds of new gunpowder is ready for trial at Frankford Arsenal, Pa. Diller report to Lincoln, 31 October 1863, Abraham Lincoln Papers, Library of Congress, Washington, DC.

Walks to Treasury Park with Sec. Stanton to watch demonstration of liquid fire by A. Berney. Bruce, Tools of War, 238.

Directs Gen. Dix: "It is very important for Hooker to know exactly what damage is done to the Railroads, at all points between Fredericksburg and Richmond. . . . Please ascertain fully what was done, & what is the present condition, as near as you can, and advise me at once." Abraham Lincoln to John A. Dix, 9 May 1863, CW, 6:207.