Digital Sanborn Maps: Delaware  Connect to Digital Sanborn Maps: Delaware
Also known as: Sanborn Maps: Delaware
Access: Internet-delivered database. There are three ways to connect:
  1. from a public computer in the University of Delaware Library
  2. from a University of Delaware campus connection in your dorm, lab, or office
  3. from an off-campus connection (University of Delaware ID required)
Description: Sanborn maps, produced by the Sanborn Map Company, the primary American publisher of fire insurance maps for nearly 100 years, are valuable historical tools for urban specialists, social historians, architects, geographers, genealogists, local historians, planners, environmentalists, and anyone who wants to learn about the history, growth, and development of American cities, towns, and neighborhoods. They are large-scale plans containing information that was used to estimate the potential risk for urban structures. This information includes the outline of each building, the size, shape and construction materials, heights, and function of structures, location of windows and doors. The maps also give street names, street and sidewalk widths, property boundaries, building use, and house and block numbers.

Textual information on construction details (for example, steel beams or reinforced walls) is often given on the plans while shading indicates different building materials. Extensive information on building use is given, ranging from symbols for generic terms such as stable, garage, and warehouse to names of owners of factories and details on what was manufactured in them. In the case of large factories or commercial buildings, even individual rooms and the uses to which they were put are recorded on the maps. Other features shown include pipelines, railroads, wells, dumps, and heavy machinery.

140 map sets are available for Delaware, ranging in date from 1884 to 1958.

Coverage: 1884-1958
Notes: At the splash screen, click on “Browse Maps.” On the “Browse the Maps by Selecting Options” screen, first select a state (Delaware is the only state available), then select a city, and finally select a date.
Output Formats: Map sheets are in gif format. Right click on an image to save.
Help: A key provided by the Sanborn Map Company provides information on the notation of map features. For further assistance, Ask the Library.
Software Requirements: Optimized to operate with Netscape Navigator Version 4.5 or higher, or Microsoft Internet Explorer 5.0 or higher. Javascript must be enabled within your browser settings/options.
Related Resources:

Georeferenced images of the 1868 Beers Atlas Maps (1868) are also available.

Sanborn maps for Delaware are also available on microfilm (Microfilm no. 3333, 3 reels). Later coverage for some Delaware cities is available on another reel of microfilm (Microfilm no. 5690).

Sanborn maps for other states are available on microfilm only: District of Columbia (Microfilm no. 3338 and no. 4614), Maryland (Microfilm no. 3368 and no. 4741), New Jersey (Microfilm no. 3519 and no. 4612), and Pennsylvania (Microfilm no. 3332 and no. 4613).

Users: unlimited concurrent users
Producer: ProQuest Information and Learning Company

This page is maintained by Erin Daix, Collection Development Department.

Last modified: 05/15/14