§ 409-a. Entries in other indexes. Upon the filing of a notice of
petition and pendency of proceeding in the office of the registrar, the
recording officer of the county or counties in which the land title to
which is sought to be registered is located shall make an entry of the
petition to register such title in the alphabetical index of
conveyances, and in counties having a block index system, in the block
index of conveyances, showing the date of such filing and in the grantor
column the name of the petitioner, and the name of the owner where the
petitioner is the holder of a contract to purchase the premises,
together with a reference to the serial or document number given to such
notice by the registrar and the number of the proceeding to which it
relates.

Recording officers are authorized and directed to index in like manner
in the alphabetical index of conveyances, and in counties having a block
index system, in the block index of conveyances, all applications or
petitions to register titles to land heretofore filed in the office of
the registrar of the county.