Magnolia (Florida)
Manassas Gap Railroad (Virginia)
Mankato (Minnesota)
Marcy, Fort (Virginia)
Maricopa Wells (Arizona)
Marion, Fort (Florida)
Mayport Mills (Florida)
McGirt's Creek (Florida)
McRee, Fort (Florida)
Milton (Florida)
Mississippi River ()
Mitchell's Creek (Florida)
Mobile (Alabama)
Mojave, Fort (Arizona)
Monroe Lake (Florida)
Montgomery (Alabama)