The documents under examination in this paper may all be referred to as either maps or plans. Because they contain military information and are primarily intended to recount significant events of the campaign in New York in 1776 they are referred to, throughout this paper, as ‘plans’. By definition a ‘map’ need not be topographically correct, indeed all of the maps under scrutiny here border on being topological by nature, as the scales and topological detail used is so inaccurate. A plan, by definition, does need to be accurate.