Relief shown by hachures and form lines. Depths shown by soundings. "Triangulation ... [and] topography by J.J. Gilbert ... ; hydrography by Lieut. J.C. Burnett ... ; verification of hydrography by Lieut. Comdr. S.M. Ackley." "Drawing by A. Lindenkohl ; engraving: topography, hydrography, general lettering, title and notes by E.A. Kübel, sand by Evans and Bartle." Coding for buoys in red and black. "No. 6122." "Plate no. 2155." Department of the Army, Portland District, Corps of Engineers; gift; 1989/11/07; 19702
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