Jackson, John W. The Pennsylvania Navy, 1775-1781: The Defense of the Delaware. Rutgers University Press, 1974. First Edition. ISBN: 0813507669. Second printing.
Very good blue cloth, 6 1/2 x 9 1/2 inches, former owner's name of ffep, xiv., 514 clean and unmarked pp. Good price-clipped dust jacket with light edge-wear, now in a clear wrapper. Very good in good dust-jacket. Hardcover. 
"Mr. Jackson has made the first exhaustive study of the correspondence and documents relating to the Pennsylvania navy. In addition to the narrative history, he provides appendixes giving the fleet roster, details of the chevaux-de-frise, payrolls, rules of administration, a brief biography of the controversial Captain Robert Whyte, a description of ordinance found in Forts Mercer and Mifflin, and newly discovered correspondence between Benjamin Franklin and Robert Erskine, with Erskine's design of a chevaux-de-frise for the Delaware." - dj.