MacTopos Mid-Atlantic 3.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is James Associates. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Camp, bike, and hike in Shenandoah National Park. Fish, kayak, and canoe in the coastal waters. With MacTopos, enjoy the Mid-Atlantic States at their best! James Associates, producer of MacGPS Pro software, now offers MacTopos Mid-Atlantic States for the ultimate topographic digital map solution.
Two Mid-Atlantic States DVDs contain USGS topo maps for the entire states of Delaware, Maryland, New Jersey and Virginia, plus Washington D.C.