Morgan took 6 years to complete his survey of London "on scientific principles" - i.e. showing the familiar plan view rather than the pictorial style used by earlier cartographers. Published in 1682, this is the first detailed map produced after the Great Fire, at a scale of 300 feet to the inch and printed on 16 sheets which measured eight feet by five in total. The original is embellished with dedications, lists of subscribers, pictures, an index and many other details which encroached on the space available for the actual map. Removing all this extraneous detail leaves the version used in Time Travel Explorer with a curiously shaped outline. William Morgan was the step-grandson of another famous mapmaker, John Ogilby.