A lot of data comes from NYC open data: Massive collection of raw lidar, contour, GIS data: ftp://ftp.gis.ny.gov NYC Open Data (GIS related): https://github.c

A lot of data comes from NYC open data: Massive collection of raw lidar, contour, GIS data: ftp://ftp.gis.ny.gov NYC Open Data (GIS related): https://github.com/CityOfNewYork/nyc-geo-metadata https://github.com/CityOfNewYork/nyc-geo-metadata An example direct download link from the NYC data website: https://data.cityofnewyork.us/browse?tags=dem https://data.cityofnewyork.us/browse?tags=dem More Lidar links https://gis.ny.gov/elevation/lidar-coverage.htm https://gis.ny.gov/elevation/lidar-coverage.htm From Cornell, Elevation example, (AWS s3 links): https://cugir.library.cornell.edu/catalog/cugir-008186?isotopics=6 https://cugir.library.cornell.edu/catalog/cugir-008186?isoto...