"Survey of San Diego River and its vicinity with a view to the Construction of a Levee and Canal to turn the river from its present course", Derby, George Horatio (Lt)

This map is the smaller issue of the San Diego survey by Abert and Derby that proposed a diversion of the San Diego River to resolve the problems of flooding during the rainy season. The map shows the nascent town of San Diego centered around its plaza, with Fort Stockton and the ruins of the old Presidio nearby. The roads are noted and labeled as leading to Los Angeles, as well as one to New S. Diego. The map extends to include False Bay and San Diego Bay. Inset with an overview of the San Diego region. Lithography by J. Ackerman of New York.

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Condition: A

Issued folded, now flattened with the binding trim replaced to accommodate framing.