"Since the invention of gunpowder, fortification has received various improvements, and many have been the books wrote upon this subject, which might incline one to think, that it was arrived to its utmost perfection. . . "
United States Works Progress Administration (New York, N.Y.)
Tables of grid coordinates ... computed ... by the Project for the computation of mathematical tables ... The basic formulas upon which the tables have been developed are from Special publication no. 59, U.S. Coast & Geodetic Survey.--Pref.