Do you have a Delaware public library card?
If you do, you have free access to additional genealogy books and databases.
Indicates a site that is entirely or predominantly fee-based.
A collection of maps which depict the commercial, industrial, and residential sections of some twelve thousand cities and towns in the United States, Canada, and Mexico and date from 1867 to the mid 1960s. The maps were used to gauge the fire risks for urban structures and display detailed information about buildings, including the outline of each building, the size, shape and construction materials, the function of structures, street names, and house and block numbers. The maps were hand-drawn and colored. These were published by the Sanborn Map Company, the primary American publisher of fire insurance maps.
B.A., History. University of North Carolina, Chapel Hill. 1973.
M.S., Library Science. University of North Carolina, Chapel Hill. 1981.
Many older publications are available full text in repositories and collections, such as, Google Books, Internet Archives, and Hathi Trust. Search for the publication in Google Books and in Google or your favorite search engine.