- Transit feasibility study for the city of Delaware and Delaware County, Ohio by Patricia Moore, 1977
- The personnel system of the City of Milford, Delaware by Marq R Ozanne, 1974
- The Chesapeake and Delaware Canal Chronicles of Early Life in Towns Along the Historic Waterway (An Illustrated Collection of Memories by Residents and Former Residents of Delaware City, Saint Georges, Kirkwood, Summit, and Chesapeake City) by Robert Hazel, 2004
- Effects of proposed dikes and sediment traps on shoaling and currents in Tidewater's Delaware City channels: Hydraulic model investigation (Miscellaneous ... Army Engineer Waterways Experiment Station) by William H Bobb, 1965
- Opinion of Hon. John W. Davis relating to the right of the City of New York to utilize certain waters of the Delaware River: June 22, 1928 by John W Davis, 1928
- Report on a system of sewerage for the city of Wilmington, Delaware by Rudolph Hering, 1883
- Potentiometric maps and ground-water-level data for the industrial area northwest of Delaware City, Delaware (SuDoc I 19.76:95-318) by U.S. Geological Survey, 1996
- Delaware City quadrangle (DEC) (Delaware Geological Survey atlas) by Nenad Spoljaric, 1983
- Life in a refinery town: The history and impact of the Getty Oil Company in Delaware City, Delaware by Andrew D Zimmerman, 1983
- The profile of a city: Milford, Delaware 1975 by Edward C Ratledge, 1975
- Flood insurance study : city of Wilmington, Delaware, New Castle County (SuDoc FEM 1.209:100028)
- Testimonials and educational principles: Of the Rev. J. Walker Macbeth, principal of [Delaware City Academy] by J. Walker Macbeth, 1859
- Cultural resource review and observation during rehabilitation of the Alexauken Creek aqueduct on the Delaware & Raritan Canal feeder, city of Lambertville and Delaware Township, Hunterdon County, N.J by Brian H Morrell, 1991
- Coastal energy activity impact analysis for Delaware City, Delaware by Andrew Zimmerman, 1982
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