The clerk of the circuit court for Montgomery County is hereby authorized and directed to cause the entries in the set of index books now installed in such clerk’s office, relating to the land records of the county, beginning with the year 1953 and ending when a new current series is installed, to be reclassified, regrouped by surname and reindexed according to the system now installed, so as to facilitate the examination of such indexes and the work of making accurate entries therein. For this purpose the clerk of the circuit court for the county is hereby authorized to contract for the work of reclassifying, regrouping and reindexing such indexes to the land records, and he is hereby authorized to purchase all books, racks, shelves, supplies and equipment necessary to accomplish such purpose, and thereafter, from time to time to purchase the books, supplies and equipment necessary to keep the land record index currently up to date. The total cost of such reclassification of such land record indexes, and the cost of the necessary books, racks, shelves, supplies and equipment therefor shall be paid out of the excess fees of the office of the clerk of the circuit court for the county. (Mont. Co. Code 1965, § 7-25; 1961, ch. 774, § 1.)