Section 919. Block indices in offices of county clerks

1. New York, Bronx,
  Kings and Queens counties. a. The county clerks of the counties  of  New
  York,  Bronx,  Kings and Queens shall continue to index under the proper
  block numbers all instruments now required by law to be recorded in  the
  books  of  notices  of  lis  pendens.  Such block index of notice of lis
  pendens shall be entitled "the block index of notice of lis pendens" and
  shall be ruled for entering therein the date of filing,  the  nature  of
  the  action,  the  nature of the instrument, the court and index number,
  the first named defendant, the first named plaintiff, the lot number  or
  street address, if any, the microfilm number and the proceedings had.
    b.  The  county  clerk of each of such counties shall also continue to
  index under the proper block numbers all statutory notices of  liens  or
  claims  on land other than lis pendens which may be filed or recorded in
  his office, which index shall be entitled "the block index of liens" and
  shall be ruled for entering therein the date of filing,  the  nature  of
  the  instrument,  the  owner of the premises affected by the notice, the
  name and address of the lienor by whom the claim is  made,  the  amount,
  the lot number or street address, if any, and the proceeding had.
    c.  On  and  after July first, nineteen hundred sixty-four, the use of
  land maps in the offices of the clerks of  the  counties  of  New  York,
  Bronx,  Kings  and  Queens  shall  be  discontinued,  and  the land maps
  previously in use shall remain on file for the purpose of reference.  On
  and  after such date, the tax maps for the boroughs of Manhattan, Bronx,
  Brooklyn and Queens shall be substituted for the land  maps  theretofore
  in  use  for  the  counties  of  New  York, Bronx, Kings and Queens, and
  reference shall be had to  such  tax  maps  and  to  the  block  numbers
  designated  thereon  for the purpose of indexing instruments required to
  be indexed in the block index of notice of lis pendens or in  the  block
  index  of liens. Such tax maps shall be conclusive as to the location of
  block boundaries and block number designations. The  tax  map  for  each
  borough  may  be  referred  to as the land map for the particular county
  which it affects.
    d. Except in the counties where  existing  land  and  tax  blocks  are
  presently   identical,   on  and  after  July  first,  nineteen  hundred
  sixty-four, the indices of all blocks theretofore existing in the  block
  index  of notice of lis pendens and in the block index of liens shall be
  closed except for the purpose of completing the indexing of  instruments
  filed  prior  to  such date. New block indices shall thereupon be opened
  for the block index of notice of lis pendens and for the block index  of
  liens,  which  new  indices  shall be numbered to conform with the block
  numbers designated on the tax map of  the  borough  for  the  particular
  county  to  which it relates and which shall thenceforth be used for all
  entries relating to land in such blocks. The date of  closing  shall  be
  entered  at  the end of each block index so closed and a reference shall
  be made to the block number of the corresponding block in the new  block
  index.  All  such  new  block  indices  shall  be endorsed on the covers
  thereof so as to show the date of the opening thereof.
    e. Whenever  the  boundaries  of  any  block  on  the  tax  map  shall
  thereafter  be  changed  or altered and renumbered according to law, the
  block indices of notice of lis  pendens  and  of  liens  of  such  block
  theretofore existing comprising the land in the changed or altered block
  so  renumbered  as aforesaid shall, except for the purpose of completing
  the indexing of instruments filed prior to such change or alteration and
  renumbering be closed and discontinued and new block indices  of  notice
  of  lis  pendens  and of liens shall be opened for every such renumbered
  block, which new  index  shall  thenceforth  be  used  for  all  entries
  relating  to land in such block. The date of closing shall be entered at
  the end of each block index so closed and a reference shall be  made  to

  the  number  of  every new, changed or altered block to be used in place
  thereof. The date of opening shall be entered at the beginning of  every
  new block index, with a reference to the number of every block before in
  use for the land contained in such new block.
    f.  Every  instrument  presented  to  a  county  clerk  for filing and
  required to be indexed in the block index of notice of lis pendens or in
  the block index of liens in order to entitle the same to be filed  shall
  have  endorsed  thereon the number of every block on the current tax map
  in which the land affected by such instrument is situate.
    g. The county clerk of each of such counties, so long as he  deems  it
  expedient,  may  prepare  alphabetical  indices  of  the  parties to the
  instruments mentioned in this subdivision, or to any of them,  filed  in
  his  office,  and  of  the  owners of land against which liens have been
  filed and  of  judgment  debtors  whose  names  appear  on  record.  The
  particular  form  of  such  alphabetical indices shall be as such county
  clerk shall determine, and shall cover such periods and be brought  down
  to such dates as he shall direct in respect to his own office.
    h.  Whenever any instrument entitled to be filed and indexed under the
  provisions of this subdivision shall  be  presented  for  record,  there
  shall  forthwith  be  endorsed  thereon the date, hour and minute of its
  receipt and the same shall be entered in  the  proper  index  under  the
  proper  block  number  thereof in accordance with the items set forth in
  paragraph a or paragraph b hereof.
    i. The entries made in the block indices of notice of lis pendens  and
  of  liens  in conformity with the requirements of this subdivision shall
  for the purpose of notice be deemed and taken to be a part of the record
  of the instrument to which such entries respectively refer, and shall be
  notice to subsequent purchasers or incumbrances to the same  extent  and
  with like effect as the filing of such instruments in the office of such
  county clerks now is or may be notice.
    j.  In  cases  where  any  instrument  shall  have  been filed with an
  erroneous designation, such county clerk on presentation of proper proof
  thereof shall enter such instrument in the proper index under the proper
  block number of every block, the designation of which  shall  have  been
  erroneously  stated. He shall at the same time make a note of such entry
  and of the date thereof in every place in which such instrument may have
  been erroneously indexed, opposite the entry thereof, and also upon  the
  instrument  itself,  if the same be in his possession or produced to him
  for the purpose, and the record of such instrument shall be constructive
  notice as to the property in any block not duly designated at  the  time
  of  such  filing  only  from  the  time  when the same shall be properly
  indexed.