The little building is of brick, five-sided, with two floors having a squared oak log with loop holes on each floor. There are two underground passages, one connecting it with the fort, and the other leading to the Monongahela River. This building and ground upon which it stands is owned by the Daughters of the American Revolution of Allegheny County, who keep it in excellent repair. It was the gift of Mrs. Mary E. Schenley, April 1, 1894. During the Revolution the Assembly confiscated the property of the Penn family, excepting certain manors and other property which the Proprietaries held in their private capacities by devise, purchase, or descent. The Manor of Pittsburgh contained 5766 acres and included the present city of Pittsburgh and the country eastward of it and south of the Monongahela; this was surveyed March 27, 1769, and remained as the property of the Penns. In 1784 Tench Francis, of Philadelphia, as agent for the Proprietaries, laid out this Manor in town and outlots. The surveyor’s work was done by George Woods, of Bedford. These lots found ready sale and by 1786 there were 100 houses and 500 population. The fur trade was still the most important, although the general business was improving. The first newspaper published west of the Alleghenies was the Pittsburgh Gazette, now the Pittsburgh Gazette-Times, established July 29, 1786. Pittsburgh was incorporated as a borough April 22, 1794. Another important event occurred May 19, 1798, when the galley President Adams was launched at Pittsburgh. She was the first vessel built here which was competent for a sea voyage, and was constructed by the Government, in preparation for the threatened war with France. The Senator Ross was launched the following spring. The first glass works were established here in 1797 by James O’Hara and Isaac Craig. William Eichbaum was brought from near Philadelphia to superintend this new enterprise, the first real manufacturing venture in this place. The first paper mill west of the Alleghenies was erected this same year in Pittsburgh. During the three years from 1802 to 1805 four ships, three brigs and three schooners were built in Pittsburgh. The first bank in the western part of the State was a branch of the Bank of Pennsylvania, which opened for business January 1, 1804, on Second Street, between Ferry and Chancery Lane. An iron foundry was established by Joseph McClurg during 1804. On March 24, 1811, the New Orleans, the first steamboat ever built or run on Western waters, was launched at Pittsburgh. This boat started on its initial trip to the Crescent City, December 24 following. The second such boat was christened the Comet and launched in Pittsburgh in 1813. A large number of boats was built in this city, and the trade was immense.