Sequence of georeferenced air photos and historic Sanborn insurance maps compiled into a series of scaled overlays to render a composite historic-GIS projection of the internal complexity and location of buried historic features to within 0-5 feet of their projected, GIS-derived, coordinates.The subsequent excavation, photogrammetric documentation and laser-radar recordation addressed only elements that could not be avoided through redesign (Grossman 2002, 2004 & 2007a).

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