I remember in the early 80's how the gypsy moth caterpillars almost completely devoured all the trees in western mass. I was racing in Upstate New York, and every week on our ride out on the Mass Pike, we could clearly see how much they had eaten. By the middle of August, the trees were almost as bare as in winter
They wiped out eastern Mass and southern New Hampshire, too.
I guess Mass. faired better in the 90s when Bill and Hillary ruled the country.
In 1997 they hit Ohio pretty hard. Along the Ohio Turnpike most of the oaks were bare in early July...most re-foliated by fall but it seemed like it took a good 2-3 growing seasons for them to return to normal.