While there's not enough in this image to identify a coachbuilder for this '64 Cadillac, how many hearses like this could have served on an island as small as Martha's Vineyard? Whether it's still in service or not, it wouldn't surprise me to hear the car might still be on the island. There's also the possibility it handled the funeral of some other promiment person (or even locally-prominent person) who lived on the island, after which its photo might have appeared in the island's newspaper some other time. If anyone in our circle vacations there and gets tired of the beach against all odds, we're counting on them to check the microfilm at the library or the archives at the newspaper!