Oh, nice. Setting the date to 1800 and looking at Boston shows the "pre-fill" coastline, and even the fort at Boston Neck. No roads, though, and Logan Airport

Oh, nice. Setting the date to 1800 and looking at Boston shows the "pre-fill" coastline, and even the fort at Boston Neck. No roads, though, and Logan Airport's land wasn't filled in in 1825, but it is editable.