Herbert Chapman blue plaque | Open PlaquesHerbert Chapman blue plaqueSpudgun67 on Wikimedia Commons How to add yours Megalit on Wikimedia Commons Megalit on Wikimedia Commons Spudgun67 on Wikimedia Commons Spudgun67 on Flickr 6 Haslemere Avenue, Hendon, Barnet, NW4, London Google Streetview OpenStreetMap by administered http://openplaques.org/plaques/483