A bit of Alameda History
Chipman and Aughinbaugh bought most part of Alameda main Island in 1851 from Antonio Peralta. They kept for themselves the western and eastern parts of Alameda. The other portions were later sold to Hays & Caperton, Foley, Hibbard, Fitch & Sharron and are delimited nowadays roughly by the High, Park , Grand Ave and Webster streets.
The buyers agreed to build a road 100ft wide, going East and West through their tracts, so everybody would have access to his acreage. This street was then called Central Ave.
The small magnetic cache is located not too far from the end of the Street by the bay.