£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.
£10,000
By [HEATHER, William, and] John William NORIE, 1816 additions to 1823.
Stanford’s map of North West India
“more knowledge of the Eastern Seas than perhaps any other man”
Trapezoid projection of the Caspian Sea
Forlani’s magnificent plan of Venice
First large-scale survey of Venice 

