§ 50. Release and transfer of lots and certificates of sale. The
purchaser or the owner for the time being of tax certificates of sale of
such several parcels or lots shall duly execute and acknowledge, in the
manner now required in the case of a deed, releases of each and every
parcel or lot, which has been redeemed through the county treasurer's
office or directly with the purchaser or owner for the time being of
such tax certificates. Such releases shall be filed in the office of the
county treasurer.