There is a great deal of overlap in the sources counted as "family histories" and the sources counted as "local histories." Be sure to check both.
This is a selected list of family histories. Check DELCAT Discovery find more.
These are examples of useful subject terms to use in DELCAT and WorldCat Local
Delaware -- History, Local
[name of the city or town (state abbreviation)]-history
New Castle Del-Buildings, structures, etc.
Wilmington (Del.)-Pictorial works
Laurel (Del.) -- History
[name of the city or town]-history
County histories are valuable for history of the county, including changes in county boundaries. Many includes include lists and/or biographical sketches of early settlers or prominent residents.
Many older histories have been scanned are available in Google Books. Tip: enter a title in quotation marks.
B.A., History. University of North Carolina, Chapel Hill. 1973.
M.S., Library Science. University of North Carolina, Chapel Hill. 1981.