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Although somewhat dated, a good collection of maps is the Atlas of the State of Delaware by Daniel G. Beers (1868; reprint, Georgetown, Del.: Sussex Prints, 1978). For quick reference, maps of Delaware hundreds are on the inside back cover of the Delaware Genealogical Society Journal and in Hancock’s The Reconstructed Delaware State Census of 1782 (see Census Records for Delaware). One of the best collections of Delaware maps is at the Delaware Public Archives.