£250
By HYDROGRAPHIC OFFICE, Septr. 12th 1855. Large corrections Novr. 1874. Dec. 1886, Dec. 1887, Nov. 1891. Small corrections [to 18]92.
£500
By UNITED STATES HYDROGRAPHIC OFFICE, April 1885. Corrected to May 15 1897.
£1,200
By SMITH, Gavin, 1806 [but 1899].


