72 Pa. Stat. § 6001
And it shall be the duty of the said county treasurer to give at least sixty days' notice of the time and place of such sales, the township or townships in which the said tracts of land are respectively situated, the number of acres contained in each tract, and the names of the warrantees or owners thereof, and the sums due upon each tract for taxes, at least four times in one daily newspaper in the city of Philadelphia, and in one other newspaper in or nearest to the county where such lands lie, under the penalty of fifty dollars, in each and every case, to be recovered by the owner or owners of the land sold as aforesaid, as debts of like amount are by law recoverable, but the neglect of such treasurer to cause the said publications to be made shall not, in any case, invalidate any sale made in pursuance of the provisions of this act.
72 P.S. § 6001