So I take it that in the US you don't have a simplified geo-referencing system like the UK Ordnance Survey's National Grid coordinates? UK aware mapping software generally understands this. e.g. type TQ290796 into www.multimap.com or go to any other place (or palace) in the UK and the Grid Reference is displayed. The digits are metres so locations are accurate to 100 metres, but more can be used if needed.