Alton, Illinois
1927 USGS 1:62,500 topographic map with shaded relief in 20″ x 24″ layout. This is part of a series of maps show the major tributaries
1927 USGS 1:62,500 topographic map with shaded relief in 20″ x 24″ layout. This is part of a series of maps show the major tributaries
1931 USGS 1:62,500 topographic map with shaded relief in 20″ x 24″ layout. This is part of a series of maps that show the major