Added aerial photo coverage for all of Harford County Maryland a total area of 527 square miles in the year 1957. View of Aberdeen Proving Ground the U.S. Army’s oldest active proving ground as seen in 1957.
Added aerial photo coverage for all of Harford County Maryland a total area of 527 square miles in the year 1957. View of Aberdeen Proving Ground the U.S. Army’s oldest active proving ground as seen in 1957.