Maps of Gettysburg is a very special undertaking that lays out the entire campaign in text and schematic, a first.
The work is beautifully done and intra-day map iterations add extra layers of information representing an immense amount of work and care.
My problem with military atlas makers generally is about sourcing and validating. But Gottfried here offers (humbly) his own extensive walking experience in combination with his bibliography of sources. He admits to fallibility and simply pledges his best effort. Transparency forecast: good.
No one who owns this work can fail to spend several imaginative hours in an easy chair, right and left brain at play in a major work of ACW history.