64 Pa. Stat. § 91
From and after the first day of May next, and not sooner, the land office of this commonwealth shall be opened for applications for the lands within the purchase made or to be made by the commissioners aforesaid, (the lands within this state appropriated for the redemption of depreciation certificates, and the donation lands to the officers and soldiers of the Pennsylvania line, only excepted,) at and after the rate of thirty pounds for every hundred acres of the same, and so in proportion for greater or less quantities thereof; such application, or the survey thereof to be made, not to exceed one thousand acres, with the usual allowance of six per centum for highways; and every applicant for any of the same lands shall, before the warrant for the same issue, produce to the secretary of the land office an acquittance signed by the receiver general of the said land office, setting forth that the full purchase and consideration aforesaid has been paid and satisfied: and the bills of credit of this state, dated the twentieth day of April, 1781, and gold and silver money, and the certificates described and directed in and by the act aforesaid, shall be received by the said receiver general, in satisfaction of all purchase money, as aforesaid.
64 P.S. § 91