"The tax records for this township [Mount Joy] which are here reproduced cover the following years: 1759, 1769-1770, 1772-73, 1776-78, 1780-82, 1785-90, 1792-94, 1797-1803, 1805-11, 1813-16, 1818, 1820-22, 1825. On this microfilm, a circle in the upper left-hand corner of a frame indicates the beginning of a new document."