While not 100% certain (having left Sunderland in 1971) I think Nelson St was renamed rather than demolished. My memory of Kipling St is of terraced cottages which were not new buildings.Also, several streets in Southwick with the same name as streets on the south side of the river were remamed in the late 60s including John St in Southwick which was renamed Darwin Street when I lived there between 1965-1969.Perhaps you could check if there is/was another Nelson St? Hope this is of some help. Marie Kerr marie@kerr75.fsnet.co.uk