§ 57. Bells; mail receptacles. 1. Whenever bells are installed at the
entrance to any multiple dwelling or at any door of an individual
apartment in a multiple dwelling, they shall be kept in good working
order.

2. Whenever the owner of a multiple dwelling has not arranged for mail
to be delivered to occupants thereof by himself, his agent or employees,
arrangements shall be made for the delivery of such mail in conformity
with regulations of the post office department.