Entrance channel and harbor from surveys by U.S. Engineers to 1918, and other sources ; Approaches from surveys in 1910 and 1911 and surveys by U.S. Navy ; E. Lester Jones, Superintendent. Depths shown by lines and soundings. Tidal information, list of abbreviations (lights, buoys). Reefs, low water, marshland, buildings, streets, railways, docks and piers, various locations (immigration station, sailor's home, post office, etc.). Textual descriptions (such as "coral flat, very shallow, partly dry at low water").