#bkmconservation #art history #assyrianreliefstreatment #syrian #assyrian #assyria #ashur-nasir-pal ii #king #kalhu #nimrud #archaeologist #brooklyn museum #museums #tigris #iraq #nineveh #nineveh province #empire #art conservation #conservation #heritage #sir austen henry layard #preservation #rediscovered #excavation #palace #art dealer #reliefs #the british museum #james lenox