Most of the large American Elms(Ulmus americana) have died decades ago. There has been one of these elms growing along a fenceline that is very large. It has a circumference over 10 feet. This summer I started noticing the Dutch Elm Disease signs in the canopy of this large elm tree, so soon it will be dead, too.
This is my last American Elm over 10′ feet in circumference. I still have a couple Red Elms that are in that large size range that appear healthy.