This 1851 “Eddy” map of San Francisco is the earliest known map by a City Surveyor.  It was never officially adopted by the City although it was performed by an officer of the County in the conduct of his official duties.  This map created the streets and blocks that still exist in San Francisco. The early years of the City were full of conflicts between claimants, speculators, squatters and government entities.  It took decades to resolve these problems.  Legal disputes reached the U.S. Supreme Court and required an Act of Congress to resolve.  These issues percolate into present day property ambiguities throughout the City and County of San Francisco.  Although the former pueblo is recognized, our legal system of land records contains little or no reference to native claims prior to colonization.