In securing genealogical data for the Gene alogical and Personal Memorial of Mercer County, it has been the constant desire of the editor to present material hitherto inaccessible to the general reader and even to many gene alogists. Therefore. Recourse has been had to manuscript court records and to proceedings of the legislature. A portion whereof has never been printed. This is particularly true of the section entitled The Genesis of Mercer Coun ty. For convenience, an outline of township organization is given.