Dick Eastman published the news this morning that "The New England Historic Genealogical Society has just released a valuable tool for anyone with English ancestors who emigrated during the Great Migration of immigrants to New England from 1620 to 1640."
Check it out here: https://www.americanancestors.org/specials/great-migration-parish-map
Original link is broken. AA sent me, 3.21.24, the new link which is the title. And IT works!