The earliest obtainable map of San Francisco. During his round the world voyage, La Perouse coasted southward along the California coast in 1786, passing San Francisco on Sept 10 and arriving in Monterrey on Sept 13, where he remained for 9 days, before setting out for the Philippines. La Perouse's map of San Francisco is most likely based upon a chart secured by La Perouse from the Spanish pilot Mourelle in Manila. It derives from the rare Dalrymple Plan of 1789 and is similar to the Plano del Puerto... published by the Mexican Government in 1825, which was derived from Canazares chart of 1776 and Camacho's charts of 1779 and 1785. The map includes 21 place names, including Alcatraz, the Presidio, Harlow 15; Wagner 846. Merced, the Mission of San Francisco, and other current landmarks. A fundamental map for San Francisco collectors, the earliest obtainable map of the bay. Harlow 15; Wagner 846.