1922 Goddard aerial photograph view to east. Monks Mound at lower left, measuring 1000 feet long, 800 feet wide, 100 feet high.
Illinois State Museum archives, Goddard-Ramey Flight.
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1922 Goddard aerial photograph view to east. Monks Mound at lower left, measuring 1000 feet long, 800 feet wide, 100 feet high.
Illinois State Museum archives, Goddard-Ramey Flight.