On the next year, Penn calls to America a former captain in Cromwell's army named Thomas Holme for being the first surveyor of Pennsylvania and create Philadelphia.
Penn is very keen to ensure that his colonization is clear and controlled and quickly asks Holme to raise a map sufficiently accurate to locate the holdings of the settlers.
Holme's map is executed at a scale of 1 inch per mile. There is not any equivalent in the American cartography of that time. It also includes in an inset the rectilinear plan of the new city of Philadelphia.
The Holme map is printed in 1687 in London. The first state is known as a single copy kept in the British Museum. The second state, with the Philadelphia inset at the top right, is also extremely rare. The only copy in private hands is estimated $ 200K to 300K, for sale by Keno in New York on January 31, lot 9.
This map is an assembly of six sheets for a total size of 85 x 140 cm, colored later.