المستند
Plate 82, Part of Section 13, Borough of the Bronx. [Bounded by Broadway, Van Cortlandt Park South, Gun Hill Road, E. 211th Street, Webster Avenue, E. 233rd Street and Mt. Vernon Avenue.]
from Atlas of borough of the Bronx, Sections 9 10 11 12 & 13 : from actual surveys and official plans / G.W. Bromley and Co.
New York Public Library1921