16 Pa. Stat. § 7924
In order to entitle the said historical society to the said appropriation, the following conditions shall have been first complied with: The money shall be paid to the oldest society in each county, if there be more than one; it shall have been organized at least three years; incorporated by the proper authority, and have an active membership of one hundred persons, each of whom shall have paid into the treasury of said society a membership fee of at least two dollars for the support of the same: And provided further, That no appropriation under this act shall be renewed until vouchers shall be first filed with the board of county commissioners, showing that the appropriation for the prior year shall have been expended for the purpose designated by this act.
16 P.S. § 7924