old mill at knights ferry historic landmark

rock woodland ruins branch knights ferry historic landmark markers vista ancient plaque buena dentville mining trading founded 1849 argonauts mines rare bridge reportedly designed grant old built 1854 town county 1862 1872 californiahistoricallandmarks landmarks washington 347 picturesque unincorporated community census-designated stanislaus california nestled foothills sierra nevada modesto river wikipedia coordinates 37°49 120°39 81972°n 120 66444°w building tree house art mill walls william knight trader towns northern landing undeveloped partnered local james vantine staple covered