These base maps are drawn on archival quality mylar and are currently stored in the park. Maps based on aerial photography flown in 1989. GIS Specialist 2. Antietam National Battlefield 4. P.O. BOX 158 3.
Elevations are in feet above sea level.
Not available 2. This data is in compressed tar format. To uncompress use the UNIX uncompress command and then extract the tar file. The data is available free of charge if accessed online. Paul Handly 2.