How the aerial view of the island was created:

All the elements of the island--topography, buildings, walkways and dock--were drafted in MiniCad from ground measurements, scaled photographs, an aerial photograph and a few blueprints that survived. After all the buildings were drafted, (an incredibly tedious task of entering numeral after numeral to create the drawings,) they were imported into a three-dimensional program, Strata Studio Pro. An angle was choosen for this view, and then Lawrence did a pen and ink drawing from his 3-D model. The drawing was then scanned, and color applied with a digital tablet in the program Photoshop.

Top view below is the contemporary view; below it is the view of the island in 1867.