Ruskie,
Yesterday Lieutenant Andrew Armstrong " and Son" , rolled in their graves when you said you were disapponited that he only mapped Warkworth area and not the county !
With great toil he/they mapped the whole county. And as Jennifer points out much of the map appears within the appropriate communities sections within the web site. But Northumbland County Record Office did not use the complete map of 1769, as their list of communities did not include every community in the county.
Seemingly making the map was very expensive, but Duke of Northumberland and other landowners helped with the costs.
It was, is ? available from Northumberland CRO (Woodhorn) for 30 GBPs.
Michael