[84] "Mill Grove" farm is in Montgomery County, twenty-four miles northwest of Philadelphia, in the town known, after 1823, as Shannonville, but in 1899 rechristened "Audubon;" Norristown is five miles to the east. [85] Mr. William H. Wetherill of Philadelphia, whose hospitality I have enjoyed and to whom I am indebted for many interesting facts and records pertaining to "Mill Grove." Samuel Wetherill, Mr. W. H. Wetherill's grandfather, was one of the first to bring "black rock," or coal, from Reading to Philadelphia. Samuel Wetherill, Junior, who is said to have started the first woolen mill in the country and to have produced the first white lead made in the United States, purchased "Mill Grove" for the sake of its minerals in 1813, the war having put a stop to all importations from England at that time. He actually succeeded in extracting several hundred tons of lead from the "Mill Grove" mines, doing better, it is thought, than any who preceded or followed him. Samuel Wetherill, Junior, died in 1829, and was succeeded in the lead and drugs industry by his four sons, of whom Samuel Price Wetherill became the owner of "Mill Grove" in 1833. The farm remained in the hands of the Wetherill family until 1876, and returned to them again, when the present owner came into possession, in 1892. [86] In 1761 James Morgan, the first miller and builder, conveyed one-half of the mill site of five acres to Roland Evans, who came into possession of the other half, with the adjoining farm, in 1771; the property was sold to Governor John Penn in 1776; it passed to Samuel C. Morris in 1784, and to the Prevosts in 1786. [87] The lease, which was drawn up in English, April 10, 1789, reads in part as follows: "This indenture, made on the tenth Day of April in the Year of our Lord, One thousand Seven hundred & Eighty nine, Between John Audubon, of the Island of St. Domingo, Gentleman, now being in the City of Philadelphia, of the one party, and Augustine Prevost...." The lease included the messuages, grist mills, saw mills, plantation and tract of land, which is described, tools, implements, stock, and furniture of the mills and farm, and was drawn for one year; it was signed in the presence of Miers Fisher, agent and attorney for Jean Audubon.