Monumental ink on drafting linen map of Central Park from the first half of the 20th century. The map was almost certainly a city planning document during Robert Moses's tenure as New York City Park Commissioner. It is primarily a schematic of water and electricity infrastructure within the Park, and in that respect, it is exceptionally detailed; for instance, main waterlines within the Central Park Zoo and Metropolitan Museum of Art are shown and labeled.
Dating the Map
The map lacks any obvious maker or dating identification but based on some anachronisms we can come up with an approximate date of in the mid-1930s.
Immediately north of the Great Lawn is an area leading to the Reservoir called "The Promenade" - this was never built.
The footprint of the Metropolitan Museum remained unchanged from 1926 to 1971, and this map comes from that period.
Robert Moses Era