Scope and Content Eleven loose maps re Los Angeles-Long Beach Harbor tidelands area titled:"Tide Lines, San Pedro Bay, California," negative photostat (undated) "Tide Lines, San Pedro Bay, California," positive photostat (undated) "Map showing the shifting mouth of the San Gabriel River, near Long Beach, Cal., since 1857," positive photostat with colored lines (1906) "Harbor district, Los Angeles-Long Beach California," Francis Bates, print with colored pencil...