The maps and atlases in the Trentoniana Collection range from hand drawn to bound plate books. Some of the maps were found inside city directories, which were the telephone books of their day. A list of hard copy maps and atlases for use in the Trentoniana room can be found here, as well as a list of hard copy city directories.
Volumes of Sanborn Fire Insurance maps of the Trenton area are available for in-room use, and have also been digitized for 11x17” copying. Sanborn maps are large scale plans showing the outline of buildings, their size, shape and construction and the location of windows and doors. They also give street names, street and sidewalk widths, property boundaries, building use, and house and block numbers (both in current and previous usage). Textural information on construction details such as steel beams or reinforced walls is often given, while shading indicates different building materials. Names of factory owners and what was being manufactured are also included. Some of the maps can also be accessed via the links below:
Over 100 maps from Trentoniana have been digitized through a grant from the New Jersey Historical Commission, a Division of the New Jersey Department of State. The digital map collection is hosted online by the New Jersey Digital Highway and can be browsed via the portal below.