In 1979, the National Capital Commission, or NCC, took action to combat Dutch elm disease. It decided to protect the 2,000 elm trees on its lands, and probably the one on the Hill. There was a fumigation program, then an inoculation program for these 2,000 elms.
We don't know how many of these elm trees have survived to date. Several have probably died since then. Perhaps the NCC has this information and should be asked for it. It's a question that we're asking ourselves. We're told that it's the only one to have survived, but is it one of 1,500 or one of 20?