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1955 Map of Thiells

Name: 1955 Topographic Map of Thiells
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

The expansive grounds of Letchworth Village State Mental Institution and the Happy Valley Institution for Needy Children dominate this Rockland County landscape during the mid-1950s. The map illustrates a complex social geography where massive institutional campuses sit adjacent to traditional rural hamlets like Thiells and Ladentown. To the west, the wilderness of Harriman State Park contains remnants of the region's industrial past, including the Hogencamp Mine and various fire-control structures like the Lookout Tower on Jackie Jones Mtn.

The southeastern portion of the quadrangle shows the early suburbanization of Hempstead, New City Park, and Hillcrest, where the New Jersey and New York Railroad and the newly constructed Palisades Interstate Parkway facilitate growth. This period represents a significant transition as large-scale institutions and public parks began to preserve massive tracts of land while the southern valleys saw the emergence of modern residential developments near landmarks like the Empire State Country Club and Summit Park Sanatorium.