President, accompanied by Colonels Blair and James Nagle and Assistant Secretary of War Peter H. Watson, arrives at Navy Yard in afternoon aboard U.S.S. Ariel from three-day trip to Army of Potomac. Evening Star (Washington, DC), 11 July 1862, 2d ed., 2:2; Nicolay to Bates, 13 July 1862, John G. Nicolay Papers, Library of Congress, Washington, DC.

Ariel runs aground on Kettle Shoals and is delayed several hours during which time President and party go for swim in Potomac. Boston Transcript, 11 July 1862.

Lincoln confers with Governor Andrew Curtin (Pa.) on appointment of commissioner of internal revenue. Nicolay to Chase, 9 July 1862, Salmon P. Chase Papers, Library of Congress, Washington, DC.