[11] CARL AUGUST VOSS. _Gedenkschrift zur Einhundertfuenfundzwanzig-jaehrigen Jubel-Feier_, Pittsburgh, Pa., 1907, p. 14. [12] REV. CYRUS CORT, D.D. _Historical Sermon in the First Reformed Church of Greensburgh, Pennsylvania_, October 13, 1907, p. 20. [13] SAMUEL HARPER. “Seniority of Lodge No. 45,” _History of Lodge No. 45, Free and Accepted Masons_, 1785–1910, Pittsburgh, Pennsylvania, pp. 97–109. [14] _Pittsburgh Gazette_, June 15, 1799. [15] _Tree of Liberty_, June 6, 1801. [16] _Tree of Liberty_, June 12, 1802. [17] _Diary of David McClure_, New York, 1899, p. 53. [18] PERRIN DULAC. _Voyage dans les Deux Louisianes_, Lyon, An xiii-(1805), p. 132. [19] _Pittsburgh Gazette_, August 26, 1786. [20] _Pittsburgh Gazette_, November 18, 1786. [21] _Pittsburgh Gazette_, January 6, 1787. [22] _Pittsburgh Gazette_, December 2, 1786. [23] _Pittsburgh Gazette_, May 5, 1787. [24] _Pittsburgh Gazette_, November 17, 1787. [25] _Pittsburgh Gazette_, July 26, 1788. [26] _Pittsburgh Gazette_, September 30, 1786. [27] _Pittsburgh Gazette_, March 24, 1787. [28] _Pittsburgh Gazette_, July 19, 1788. CHAPTER II A NEW COUNTY AND A NEW BOROUGH The constantly rising tide of immigration required more territorial subdivisions in the western part of the State. Westmoreland County had been reduced in size on March 28, 1781, by the creation of Washington County, but was still inordinately large. The clamor of the inhabitants of Pittsburgh for a separate county was heeded at last, and on September 24, 1788, Allegheny County was formed out of Westmoreland and Washington Counties. To the new county was added on September 17, 1789, other territory taken from Washington County. In March, 1792, the State purchased from the United States the tract of land adjoining Lake Erie, consisting of two hundred and two thousand acres, which the national government had recently acquired from the Indians. This was added to Allegheny County on April 3, 1792. The county then extended northerly to the line of the State of New York, and the border of Lake Erie, and westerly to the present State of Ohio.[29] On March 12, 1800, the county was reduced by the creation of Beaver, Butler, Mercer, Crawford, Erie, Warren, Venango, and Armstrong Counties, the area of these counties being practically all taken from Allegheny County. By Act of the General Assembly of March 12, 1803, a small part of Allegheny County was added to Indiana County, and Allegheny County was reduced to its present form and dimensions.[30]