January, 1774.—Dr. James Connelly occupies Fort Pitt with Virginia militia, and changes name to Fort Dunmore.
July, 1776.—Indian conference at Fort Pitt.—Pontiac and Guyasuta.
June 1, 1777.—Brig. Gen. Hand takes command of the fort.
1778.—Gen. McIntosh succeeds Hand.
November, 1781.—Gen. William Irvine takes command.
May 19, 1791.—Maj. Isaac Craig reports Fort Pitt in a ruinous condition.—Builds Fort Lafayette.
September 4, 1805.—The historic site purchased by Gen. James O'Hara.
April 1, 1894.—Mrs. Mary E. Schenley, granddaughter of Gen. James O'Hara, presents Col. Bouquet's Redoubt to the Daughters of the American Revolution of Allegheny County, Pennsylvania.