“Cartographic materials” and “cartographic resources” are phrases that we use in the map library world to describe a whole gamut of map-like information sources. Elevation profiles and geologic sections are particular types of cartographic materials that represent vertical planes, perpendicular to the earth’s surface, in contrast to the typical horizontal-surface representations commonly referred to as maps.

Here are a couple of examples from the NYPL Digital Gallery that show the added dimension that profiles can provide for an understanding of the New York City environment. Click on the images to connect to them in the Digital Gallery, where you can enlarge and zoom into them.

Profile of the twelve avenues in the city of New York

[Profile of] Tibbits Brook route [of Croton Aqueduct from the Harlem River to the Battery in Manhattan]

(Note the distributing reservoir on the crest of Murray['s] Hill, the site of NYPL!)

Researchers who visit the Lionel Pincus and Princess Firyal Map Division are interested, more often than not, in our resources on New York City history. If they don’t know about them before they arrive, our readers quickly become familiar with names like Perris, Bromley, Robinson, Sanborn, and Hyde for the fire insurance and real estate maps, showing buildings block by block, that they published over the years. Without doubt, we will write more about these maps and use them to illustrate our postings about neighborhoods (e.g., Five Points) and related topics of local interest.