Interesting antique Ensign & Thayer map of Manhattan from the Battery to 32nd Street, with Williamsburg and Brooklyn Heights to the east (bottom).
Inset maps of upper Manhattan and Jersey City are positioned in the upper-left corner of the map.
The map locates three "Fire Alarm" districts, each divided into two sections. Omnibus routes are colored in orange.
The map was popular in the 1840s and was published for a number of years.