Coast chart no. 69, Florida reefs : from Newfound Harbor Key to Boca Grande Key / from a trigonometrical survey under the direction of A.D. Bache, Superintendent of the Survey of the Coast of the United States ; triangulation by J.E. Hilgard, Lieut. Jas. Totten, U.S.A. Assts., J. Rockwell, J.A. Sullivan, Sub-Assts. ; topography by R.M. Bache, I. Hull Adams, Assts., C.T. Jardella & F.W. Dorr, Sub-Assistants ; hydrography by the parties under the command of Lieut. Comdg. John Rodgers & T.A. Craven, U.S.N. Assists. ; issued ... [by] C.P. Patterson, Superintendent ; verified [by] J.E. Hilgard, Assistant in charge of office ; redd. drng. by W.T. Martin and E. Hergesheimer ; engd. by A. Blondeau, H.S. Barnard, and E.A. Maedel

Relief shown by hachures. Depths shown by bathymetric tints and soundings ; Buoys shown in red, black, and white ; Includes sheet index, text, seal, and tables ; "No. 169" -- upper left margin ; "Plate no. 1125" -- upper center margin ; "Electrotype copy no. 1 by G. Mathiot, U.S.C.S." -- upper right margin ; Map complete in 4 sheets: No. 66 (also no. 166), Florida reefs, from Key Biscayne to Carysfort Reef (1878) -- No. 67 (also no. 167), Florida reefs, from the Elbow to Lower Matecumbe Key (1878) -- No. 68 (also no. 168), Florida reefs, from Long Key to Newfound Harbor Key (1878) -- No. 69 (also no. 169), Florida reefs, from Newfound Harbor to Boca Grande Key (1878) ; "Published in 1862." ; "Issued January 1878." ; "Aids to navigation corrected to 1881." ; "Triangulation executed in 1849, 1851, 1853, 1854, 1855, and 1856; topography executed in 1850, 1851, 1853, 1855, 1856, and 1857; astronomical and magnetic observations made by J.E. Hilgard in 1849."

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