572 feet high--setting the cap-stone on the Washington Monument / from a sketch on the spot by S.H. Nealy.

Print shows Superintendent P.H. McLaughlin placing cap stone on the Washington Monument. Other monument engineers and workers shown participating in the event, are Chief Engineer, Col. T.L. Casey (hands up); Casey's assistants, B.R. Green (far left) and George Davis; principal mason, Dennis O'Leary; the rigger, James Hogan; and at far right, holding a rope, cement mixer, Lewis O'Brien, an African American. The top of the page has head-and-shoulders portraits of Gen. Gershom Mott, Col. Thomas L. Casey, and Reuben R. Springer.
Illus. in: Harper's weekly, 1884 Dec. 20, p. 839.
Source for identification of L. O'Brien and fuller artist name: Washington Post, Dec. 7, 1884, pg. 1