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1900s (20th Century) Maps of Mahopac, Carmel

Explore 18 historic maps of Mahopac from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.

Whether you're researching your family's past, planning a metal detecting trip, or studying how Mahopac's landscape evolved across the 1900s, these high-resolution maps are a powerful tool for exploring the history of this region.

  • Focus on a specific era: All maps on this page are from the 1900s, giving you a focused view of this time period.
  • See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
  • Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
  • View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.

Start exploring Mahopac's history through authentic maps from the 1900s. This is your window into the past.

Mahopac, Carmel maps

(18)
  1. 1901 Map of West Point
    1901 Map of West Point
    1901 West Point
    1901 Print · USGS
    The Hudson Highlands and West Point are shown at the turn of the century, when river railroads and mountain mines defined the local economy. Genealogists can trace family landmarks and hamlets like Nelsonville, Mahopac Mines, and Yorktown Heights.
    12 unique versions available
  4. 1928 Map of Carmel
    1928 Map of Carmel
    1928 Carmel
    1928 Print · USGS
    Near the New York and Connecticut border during the late 1920s, this landscape shows a network of massive reservoirs built to serve the city. Genealogists and historians can trace rail-era developments like the New York and Harlem RR and locate sites such as the Tilly Foster Mine and Farmers Mills.
    5 unique versions available
  7. 1936 Map of West Point
    1936 Map of West Point
    1936 West Point
    1936 Print · USGS
    The Hudson Highlands in the mid-1930s reveal a landscape of strategic military grounds and evolving state parks. Genealogists and historians can trace old family burial grounds like Halstead Cem, the workings of the Mahopac Mines, and the early layout of West Point.
    2 unique versions available
  10. 1941 Map of West Point
    1941 Map of West Point
    1941 West Point
    1941 Print · USGS
    The Hudson Highlands were undergoing significant change in the years leading up to the war, blending heavy industry with expanding military installations. Genealogists can trace family lines through Continental Village, Hillside Cem, and the various schools like Manitou Sch.
    3 unique versions available
  13. 1943 Map of Lake Carmel, 1958 Print
    1943 Map of Lake Carmel, 1958 Print
    1943 Lake Carmel
    1958 Print · USGS
    Putnam County in the 1940s is defined by its massive reservoirs and the growth of lakeside communities like Lake Carmel. Researchers can trace old family lineages through the Raymond Hill Cem or locate industrial sites like the Tilly Foster Mine.
  16. 1944 Map of Croton Falls
    1944 Map of Croton Falls
    1944 Croton Falls
    1944 Print · USGS
    Upper Westchester and Putnam counties are seen here during the mid-forties, characterized by a vast network of reservoirs and the New York Central rail line. Researchers can locate family landmarks like the Wandell Cem, trace the early grounds of the Reformatory, and find community centers like Somers and Purdy.
    2 unique versions available
  19. 1944 Map of Lake Carmel
    1944 Map of Lake Carmel
    1944 Lake Carmel
    1944 Print · USGS
    Putnam County during the mid-1940s shows a landscape of deep reservoirs and rising recreational retreats. Genealogists and historians can trace the foundations of the area at Tilly Foster Mine, the Drew Seminary, and Raymond Hill Cem.
    2 unique versions available
  22. 1947 Map of West Point
    1947 Map of West Point
    1947 West Point
    1947 Print · USGS
    The Hudson Highlands and the Peekskill waterfront are captured just before the post-war boom, showing the critical junction of river, rail, and early parkways. Genealogists can trace family landmarks and burial sites like Cold Spring Cem, Amawalk Cem, and the historic Mahopac Mines.
  25. 1947 Map of Hartford, 1955 Print
    1947 Map of Hartford, 1955 Print
    1947 Hartford
    1955 Print · USGS
    Southern New England and the Hudson Valley are shown in detail during the post-war expansion era. Genealogists and researchers can trace local landmarks from the State Capitol and Yale University to the Stratford Lighthouse and Woodlawn Cem.
    2 unique versions available
  28. 1948 Map of Hartford
    1948 Map of Hartford
    1948 Hartford
    1948 Print · USGS
    Southern New England is captured here in the late 1940s, showcasing a landscape of thriving industrial cities and developing parkways. Genealogists and historians can trace the rail networks of the New York New Haven and Hartford RR or locate coastal defense sites like Fort Terry and Camp Shanks.
    2 unique versions available
  31. 1956 Map of Mohegan Lake, 1958 Print
    1956 Map of Mohegan Lake, 1958 Print
    1956 Mohegan Lake
    1958 Print · USGS
    Westchester and Putnam counties are captured in the mid-fifties during a period of steady suburban growth around traditional hamlets. Researchers can trace family roots at the Amawalk Hill Cem, locate the Loyola Seminary, or follow the New York Central Railroad.
    5 unique versions available
  34. 1956 Map of Oscawana Lake, 1959 Print
    1956 Map of Oscawana Lake, 1959 Print
    1956 Oscawana Lake
    1959 Print · USGS
    The mid-fifties landscape of Putnam County reveals a dense network of Hudson Valley reservoirs and parks centered around Oscawana Lake. Researchers can trace old mountain roads to the Mahopac Mines, Free Grave Cemetery, and the Fahnestock Ski Slope.
    4 unique versions available
  37. 1960 Map of Lake Carmel, 1962 Print
    1960 Map of Lake Carmel, 1962 Print
    1960 Lake Carmel
    1962 Print · USGS
    Putnam County in the early sixties reveals a landscape of expanding residential tracts and massive water works. Genealogists can trace family roots through Raymond Hill Cem, the Towner Sch, or the small settlement of Farmers Mills.
    4 unique versions available
  40. 1960 Map of Croton Falls, 1963 Print
    1960 Map of Croton Falls, 1963 Print
    1960 Croton Falls
    1963 Print · USGS
    Northern Westchester and Putnam County appear in the early sixties as a network of vital reservoirs and rail-stop towns. Genealogists and historians can trace institutional sites like Lincoln Hall and family burial grounds like Ivandell Cem and Warren Cem.
    4 unique versions available
  43. 1961 Map of Hartford
    1961 Map of Hartford
    1961 Hartford
    1961 Print · USGS
    Southern New England and the Hudson Valley are shown here in the mid-fifties, capturing a landscape of booming coastal cities and interior hill towns. Researchers can trace the legacy of the New York New Haven and Hartford rail corridor and find strategic sites like Camp Shanks and Fort Michie.
  46. 1962 Map of Hartford, 1971 Print
    1962 Map of Hartford, 1971 Print
    1962 Hartford
    1971 Print · USGS
    Southern New England and the Hudson Valley are shown in the early sixties, as suburban growth reached into the foothills. Trace the path of the New York New Haven & Hartford RR and find landmarks like Camp Nathan Hale and Gillette Castle State Park.
    3 unique versions available
  49. 1965 Map of Hartford
    1965 Map of Hartford
    1965 Hartford
    1965 Print · USGS
    Southern New England and the Hudson Valley are shown here during the mid-sixties expansion of the Interstate era. Trace the path of the New York New Haven & Hartford RR or locate historic landmarks like West Point Military Reservation and the Merritt Parkway.
    2 unique versions available
  52. 1986 Map of Bridgeport
    1986 Map of Bridgeport
    1986 Bridgeport
    1986 Print · USGS
    Spanning the New York and Connecticut border in the mid-eighties, this survey shows the dense rail and parkway network connecting the Hudson to the Sound. Researchers can trace the massive New Croton Reservoir system or locate landmarks like the West Point U.S. Military Academy.
    3 unique versions available
End of results
Showing maps 1-18 of 18

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