Sheet 12: Grid #12000E - 16000E, #15000N - 18000N. [Includes part of the City of Mount Vernon, Seton Avenue, Monticello Avenue, Hill Avenue, Murdock Avenue, Wilder Avenue, Amundson Avenue, Bell Avenue, Pratt Avenue and Northern boundary of the City of Ne
from Topographical survey and new street system of the borough of the Bronx, easterly of the Bronx River
Plate 81, Part of Section 13, Borough of the Bronx. [Bounded by Van Cortlandt Park East, E. 242nd Street, Martha Avenue, E. 240th Street, McClean Avenue, Webster Avenue and E. 233rd Street.]
from Atlas of borough of the Bronx, Sections 9 10 11 12 & 13 : from actual surveys and official plans / G.W. Bromley and Co.