Gen. McDowell and Col. Herman Haupt, aide-de-camp to McDowell and chief of construction and transportation on military railroads, meet President and party at Aquia Creek, Va., and accompany them in baggage car to McDowell's headquarters on north side of Rappahannock. President reviews various divisions and rides along lines with hat off as men cheer. Leaves headquarters at 9 P.M. Leaves Aquia Creek on return trip at 10 P.M. Extracts from Dahlgren Diary, John G. Nicolay Papers, Library of Congress, Washington, DC; Correspondence, typewritten copy prepared by H. H. Chapman, 6, Correspondence of Herman Haupt, Bureau of Railway Economics, Washington, DC; Official Records—Armies 1, XI, pt. 1, 30.

Transmits report on Mexican affairs to House of Representatives. Abraham Lincoln to the House of Representatives, 23 May 1862, CW, 5:230.