John Rocque was of French Huguenot stock from Monosque in Provence. The London he eventually settled in, was an expanding city which had grown unchecked and by the 1730s a new map was needed. Harry Margary, a Senior Civil Scientific Engineer for the Admiralty and self-professed inventor, produced this full-size facsimile of the famous John Rocque map in 1971. The original 18th century map never joined properly due to paper shrinkage in the printing process and only the constituent copper plates joined. For this lithographically printed version Margary altered some of the edges so the maps would join and significantly cleaned up the image area.